Nov 6, 2020 | Pest Control
By Anna V., Editorial Lead — Pest Education · Last updated: May 2026
If you’ve found millipedes in your house and want to get rid of them without spraying chemicals, you’re in the right place. At Northwest, we run millipede calls across Georgia, Alabama, Tennessee, and South Carolina nearly every week during the spring and fall rainy seasons. The good news: millipedes are harmless (no bites, no stings, no property damage) and they respond well to natural removal methods. Most homeowners can solve a millipede problem in their house with a few changes around the foundation, a dehumidifier, and some basic sealing. No pesticides required.
Here’s the realistic version of natural millipede control: what actually works, what doesn’t, and what to do when DIY methods aren’t enough.
A cluster of millipedes along a basement baseboard usually shows up within 48 hours of heavy rain.
What Are Millipedes and Why They Enter Homes
Millipedes are segmented arthropods that thrive in moist, dark environments. They eat decaying plant matter, not your home, your food, or any living thing inside. They’re slow movers, they don’t bite, and they don’t carry disease. They’re a nuisance pest, not a hazard.
Three things drive millipedes into Southeast homes:
- Wet weather and saturated soil. Heavy spring or fall rain pushes millipedes from their outdoor habitat (mulch, leaf litter, soil) toward drier ground. Sometimes that drier ground is your basement.
- Drought and dehydration. Extended dry weather has the opposite effect — millipedes seek any source of moisture, which can include indoor humidity from bathrooms, basements, and crawl spaces.
- Foundation conditions. Mulch beds against the house, leaf litter near the foundation, downspouts emptying close to the wall, and ground-level cracks all combine to make your home the easiest moisture refuge in the neighborhood.
For more on why millipedes appear and how to identify them (including the millipede vs centipede confusion most homeowners run into), see our companion guide on why there are so many household millipedes in your home.
Signs of a Millipede Infestation
Most millipede problems are obvious. You see them moving on the floor or curled up dead in corners. Other signs:
- Live sightings in basements, bathrooms, garages, crawl spaces, or laundry rooms.
- Trails of curled, dehydrated millipedes in damp corners. They enter looking for moisture and die when they don’t find enough.
- Clusters near entry points: gaps under doors, foundation cracks, basement window wells.
- Movement within 24 to 48 hours after a major rain event.
- Shed exoskeletons in undisturbed corners (suggests an established indoor population).
Natural Methods to Get Rid of Millipedes in Your House
The most effective natural millipede control isn’t a product. It’s removing the conditions that attract them in the first place. Five categories of natural methods, ranked by effectiveness.
Moisture control does most of the work. Essential oils are short-term help at best.
1. Remove Moisture Sources (The Most Effective Method)
Millipedes can’t survive indoors without moisture. Remove the moisture, and the indoor population resolves itself within days. Steps:
- Fix all leaky pipes and faucets. Even slow drips support indoor millipede populations.
- Run a dehumidifier in basements and crawl spaces. Target relative humidity below 50%. Most home improvement stores carry units in the 30 to 70 pint range; a 50-pint dehumidifier handles most Southeast basements.
- Improve ventilation in bathrooms (exhaust fan that vents outside, not into the attic), laundry rooms (proper dryer vent), and crawl spaces (functional vents or encapsulation).
- Address standing water in floor drains, sink overflows, sump pump pits, and condensation around HVAC units.
This is the single highest-impact natural method. Most homes with persistent millipede problems are also homes with chronic moisture issues. Solve one, you usually solve the other.
2. Seal Entry Points
Millipedes can only enter through gaps. Sealing them is the only way to keep new arrivals out for good.
- Caulk foundation cracks at ground level.
- Install or replace door sweeps and weatherstripping (especially garage side doors and basement hatches).
- Screen crawl space vents with galvanized 1/4-inch hardware cloth.
- Cover window wells with rigid plastic or metal covers.
- Seal gaps around utility line penetrations with steel wool packed into the gap, then caulk over the top.
- Check brick weep holes; screen them with a fine mesh if they’re large enough for millipedes to enter.
3. Reduce Clutter and Hiding Spots
Damp clutter holds moisture and creates millipede shelter. Decluttering reduces both:
- Clear stacks of cardboard, magazines, and stored papers from damp basement floors.
- Move stored items off the floor onto shelves or pallets.
- Transfer storage from cardboard to plastic bins. Cardboard absorbs moisture and is itself a food source for millipedes.
- Keep basement and crawl space corners clean and dry.
4. Diatomaceous Earth
Diatomaceous earth (DE) is a fine powder made from fossilized aquatic organisms. The microscopic edges damage the exoskeleton of insects and arthropods that crawl through it, causing dehydration. Food-grade DE is safe for use around children and pets when applied lightly.
Where to apply:
- Light dusting along baseboards in basements and crawl spaces
- Around foundation cracks and door thresholds
- Inside crawl space access doors
- Reapply after vacuuming or any moisture exposure (DE loses effectiveness when wet)
Caution: don’t over-apply. A visible white layer on baseboards isn’t more effective than a thin barely-visible dusting. It just creates a cleanup project. DE works on millipedes that crawl through it, not on millipedes that don’t.
5. Essential Oils and Natural Repellents
Cedar oil, peppermint oil, and tea tree oil all show modest, short-term repellent effects against millipedes. Mix 10 to 15 drops of essential oil per cup of water in a spray bottle and apply around entry points, baseboards, and any spots where you’ve seen millipede activity.
Honest expectations: scent-based repellents fade within 24 to 72 hours and need frequent reapplication. They’re a supplement to moisture control and sealing, not a substitute. Use them as a short-term measure while you address the underlying conditions.
What about vinegar? Equal parts vinegar and water sprayed around entry points has anecdotal support but limited research backing. It’s safe and cheap so there’s no harm in trying, but don’t expect it to solve a persistent problem on its own.
Step-by-Step DIY Removal Guide
If you have an active millipede problem and want to handle it naturally, follow this sequence:
- Identify entry points. Walk the perimeter of the basement, crawl space, or affected room. Look for cracks, gaps under doors, unsealed pipe penetrations, and dampness on walls.
- Reduce indoor humidity. Plug in a dehumidifier in the affected area. Set it to 45 to 50% relative humidity. Run continuously for at least 2 weeks.
- Address the outdoor conditions. Pull mulch back 3 feet from the foundation. Remove leaf litter against the house. Make sure downspouts extend at least 4 feet from the foundation.
- Vacuum visible millipedes. Empty the canister outside immediately to avoid odor buildup.
- Apply diatomaceous earth in a thin dusting at known entry points and along baseboards in affected areas.
- Seal entry points as a final step, after the indoor population has cleared. Caulking, door sweeps, hardware cloth on vents.
- Maintain. Re-check entry points seasonally. Run the dehumidifier through humid months. Keep mulch beds away from the foundation.
A dehumidifier set to 45-50% humidity is the single highest-impact change for keeping millipedes out long-term.
Preventing Millipedes from Entering Your House Long-Term
Once you’ve cleared an active problem, prevention focuses on the conditions that allowed millipedes in the first place.
- Seal cracks and gaps in doors, windows, and foundations seasonally. The Southeast freeze-thaw cycle and soil expansion can open new gaps each year.
- Maintain a 3-foot mulch-free zone around the foundation. Use gravel, river rock, or bare soil within 3 feet of the house. Move mulch beds farther out.
- Remove leaves, mulch, and organic debris from the foundation perimeter regularly. Fall raking is especially important.
- Direct downspouts away from the foundation. Add extensions if needed. Standing water within 2 feet of the house is the single biggest contributor to millipede entry.
- Control indoor humidity with dehumidifiers, proper ventilation, and prompt leak repair.
- Trim back vegetation so air circulates against the foundation. Damp shaded foundation walls hold millipedes longer.
When Natural Methods Aren’t Enough
Most millipede problems clear up with the natural methods above. Some don’t. Call Northwest for professional millipede control if:
- You’ve followed the DIY steps for 3 to 4 weeks and millipede sightings haven’t dropped significantly.
- You’re finding more than 10 to 15 millipedes per day in any single room.
- You can’t identify the entry points or moisture source on your own.
- You’re dealing with millipedes plus other moisture pests (sowbugs, springtails, centipedes, ground beetles). All share the same root cause and can be solved together.
- The home has chronic crawl space moisture, drainage problems, or other structural issues contributing to the millipede problem. Professional pest control + targeted moisture remediation handles both layers.
The UGA Extension Bulletin B 1412 on Southeastern household pests recommends professional pest control when DIY moisture management hasn’t reduced indoor millipede activity within a few weeks.
(Tried the natural methods and millipedes keep coming back? Request a free Northwest inspection and we’ll find the entry points and moisture sources driving them in.)
Millipedes In House: Southeast Seasonal Patterns
Millipede pressure in Georgia, Alabama, Tennessee, and South Carolina follows a predictable rhythm. Plan prevention around it.
- March through May: Spring rains drive the first major peak. Foundation perimeter prep (mulch pullback, downspout checks) is best done in late February or early March before the rainy season.
- June through August: Summer thunderstorms produce intermittent peaks. Dehumidifier should be running continuously in basements during this period.
- September through November: Fall rains and cooler nights drive the second annual peak. This is the period when most homeowners notice clusters of curled, dead millipedes in basement corners.
- December through February: Activity drops significantly. Use this window for entry-point sealing and structural prevention work, since indoor millipede pressure is at its lowest.
Frequently Asked Questions About Millipedes in the House
Are millipedes harmful to humans or pets?
No, millipedes are harmless. They don’t bite, sting, transmit disease, or damage homes. Some species release a mild defensive secretion when handled, which can briefly irritate skin and shouldn’t be eaten by pets in large numbers, but otherwise they’re entirely safe to have around.
Why do millipedes come inside my home?
They’re seeking moisture, warmth, and shelter. Heavy rain saturates their outdoor environment and pushes them indoors looking for drier ground. Drought has the opposite effect; they seek any source of moisture, which can include indoor humidity. Foundation mulch, leaf litter, and entry-point gaps make some homes much easier targets than others.
How do I prevent millipedes indoors permanently?
Three layers: (1) reduce indoor humidity with a dehumidifier and leak repair, (2) seal all entry points (foundation cracks, door gaps, crawl space vents), and (3) maintain a 3-foot mulch-free zone around the foundation. The first two address current entries; the third reduces outdoor pressure year-round.
Can essential oils keep millipedes away?
Cedar, peppermint, and tea tree oils show modest short-term repellent effects against millipedes. Mix 10 to 15 drops per cup of water and spray around entry points. Expectations: they fade within 24 to 72 hours and need frequent reapplication. Use them as a supplement to moisture control and sealing, not a substitute.
Does diatomaceous earth kill millipedes?
Yes, food-grade diatomaceous earth (DE) damages the exoskeleton of millipedes that crawl through it, causing dehydration. Apply a thin dusting at baseboards and entry points in affected areas. Reapply after vacuuming or any moisture exposure, since DE loses effectiveness when wet.
Most natural millipede solutions work. When they don’t, the underlying issue is usually structural moisture that needs more attention.
Solve the Millipede Problem at the Source
Natural millipede control works well for most homeowners. When it doesn’t, the underlying issue is usually structural moisture or hard-to-find entry points that need professional eyes. Northwest’s team handles the full workflow: moisture assessment, entry-point sealing, targeted eco-friendly treatment, and prevention plans tied to Southeast seasonal patterns.
About the Author
Anna V., Editorial Lead — Pest Education leads pest education content for Northwest Exterminating, working with senior technicians and service center managers across our Georgia, Alabama, Tennessee, and South Carolina service areas to translate field expertise into homeowner-friendly guides. The focus: accurate, regionally-specific answers to the pest questions Southeast homeowners are actually searching for.
Jul 17, 2020 | Pest Control
Millipedes are common occasional pests that are found throughout the United States. While they typically live outdoors under leaves, mulch, compost, rocks, etc, they will come indoors for two reasons: in search of water during droughts or in search of shelter after heavy rains. They are often found infesting basements, garages, and crawlspaces. If you spot millipedes in your house, it is highly likely that they are breeding somewhere in your lawn.
Millipedes are decomposers meaning their diet primarily consists of damp, decaying plant material. Because of this, they are quite beneficial to have in your garden. While they are harmless to humans, millipedes can become a nuisance if they infest your home in large numbers. Prevention is the best method of millipede control. Here are some tips you need to know about how to keep millipedes away from your home.
Remove Attractants
If there is nowhere for millipedes to hide or breed then they can’t infest your home. Prevent millipedes by removing mulch, leaves, grass clippings, boards, woodpiles, rocks, boxes, etc. from your yard, especially if they are near foundations. If you are unable to remove them completely, try to elevate them off the ground. Try not to overmulch your flowerbeds.
Eliminate Moisture
What attracts millipedes is moisture, especially in crawlspaces and around foundations. Make sure your gutters are clear and properly functioning. Consider installing gutter guards to help prevent clogs. Make sure downspouts are pointed away from foundations and use splash blocks to keep water away from foundation walls. Consider installing tiles or drains or sloping the ground so water drains away from foundations. Repair any leaky pipes, appliances, or faucets. Reduce the humidity in your crawlspace and basement with dehumidifiers, sump pumps, or soil covers.
Maintain Your Lawn
Millipedes thrive in the moist layer of thatch that can accumulate on unkempt lawns. Keep your grass mowed short and dethatch the lawn as this will make it less appealing to millipedes. Try not to overwater your lawn. Don’t water your lawn at night as there is no sun to help evaporate the moisture.
Seal Them Out
Millipedes can enter your home through cracks in the exterior of your home or foundation. Seal any cracks or openings in the outside foundation. Use thresholds or door sweeps on all exterior doors. Caulk the outer edges of the thresholds. Seal any expansion joints where sunrooms, patios, and sidewalks are next to foundations. Seal any expansion joints or gaps at the bottom of basement walls.
Wait It Out
Millipedes can only survive for a few days once they get inside your home. The conditions indoors are too dry for them to be able to live long periods of time. The infestation will be short lived and eventually they will die off. Once this happens, you can sweep them up with a broom or vacuum them up.
Contact A Professional
While millipedes don’t cause damage to homes or to the health of humans, they can become quite a nuisance when they invade in large numbers. If you have a problem with millipedes or any other pests, contact a professional pest control company who can provide you with the most up-to-date prevention and treatment techniques.
You May Also Be Interested In:
Watch out for the Stinging Pests!
Common Summer Household Pests
Termites: How to Stop Their Damage
Keeping Cool for the Summer
Turning A Yellow Lawn Green
Aug 23, 2019 | Pest Control
Millipedes are arthropods (not insects) that are commonly found in damp, moist locations. They feed on decaying organic matter. Millipedes will usually hide during the day and come out at night when the humidity is higher and dew is present on the ground. Millipedes are often mistaken for centipedes – they have elongated, worm-like bodies with 2 pairs of legs on each segment of their bodies. They are usually about 1 inch long with a hard, round, cylindrical body that is brown to black in color. When they are disturbed or dead they will curl into a spiral.
Finding a millipede in the house is not common. They cannot reproduce indoors and usually only come inside when there is a period of extreme wetness (during the rainy season) or in search of somewhere to overwinter (usually in late Fall). Millipedes are most commonly found in gardens but when they do come indoors they are usually found in the garage, basement, or the lowest level of the home. Millipedes that wander indoors typically die in a short amount of time because of the dryness.
If a millipede does get into your home, are they helpful or harmful? Should you be concerned? Millipedes are NOT harmful to humans. They do not feed on buildings, structures, or furnishings. They also cannot bite or sting. In fact, they can be beneficial in your compost pile as they help to break down the contents. They can cause damage to your garden by destroying seedlings or feeding on vegetables; however, there is no need to eliminate them unless they are causing damage to your plants.
While a millipede infestation is rare, there are things you can do to help prevent these pests from getting into your garden or home. Here are some tips on how to get rid of millipedes:
- Eliminate moisture in garden areas where millipedes are often found or where their eggs can overwinter.
- Rake out any old mulch under plants and replace it with either fresh mulch or straw.
- Put piles of raked leaves into the compost pile away from your home or bag them for disposal.
- Aerate your lawn to reduce thatch.
- Move anything that could provide a habitat for millipedes away from your home (compost piles, firewood, stones).
- Elevate any of these items that cannot be moved.
- Install a band of gravel between foundations and flower beds.
- Seal any cracks in the outside foundation.
- Seal around the bottoms of doors and basement windows.
- Use a dehumidifier to decrease the humidity in your home.
- Water lawns in the morning so they can dry out by afternoon.
- Contact a licensed pest control company who can inspect your home for entry points and help set up a comprehensive treatment and prevention plan.
You May Also Be Interested In:
Take the Homework, Leave the Lice
Where Can Bed Bugs Hide?
Where Are All of These Roaches Coming From?
Mosquitoes in the South
The Common House Spider
Jun 20, 2019 | Alabama Blogs, Georgia Blogs, Pest Control
By Anna V., Editorial Lead — Pest Education · Last updated: May 2026
If you’ve walked into your basement or laundry room and found dozens of small, dark, segmented creatures curled up in tight spirals on the floor, you’ve met household millipedes. At Northwest, we get a sharp spike in millipede calls every spring and fall across Georgia and Alabama. The cycle is predictable: heavy rain saturates the outdoor environment where millipedes normally live, they move toward drier ground, and suddenly your basement or crawl space becomes the most appealing real estate in the county.
The good news: household millipedes are completely harmless. They don’t bite, they don’t sting, and they don’t carry disease. The less-good news: when they show up indoors, they usually show up in numbers. Here’s why they end up in Southeast homes, how to tell a millipede from a centipede (a common confusion), and what to do about an active indoor invasion.
What Are Household Millipedes?
Household millipedes are elongated, segmented arthropods with two pairs of legs per body segment. Despite the name (which translates to “thousand feet”), most species have between 80 and 400 legs. They’re typically dark brown to black, about 1 to 1.5 inches long when fully grown, and roll into a tight spiral when threatened.
Three things to know about millipede biology:
- Diet: Millipedes are detritivores. They eat decaying plant matter, leaf litter, rotting wood, and damp organic material. They don’t eat live plants, fabric, food in your pantry, or anything else inside a house.
- Habitat: They need moisture to survive. Outdoors, that means mulch beds, leaf litter, decaying logs, under stones, and the top layer of soil. Indoors, they’re drawn to basements, crawl spaces, bathrooms, and laundry rooms.
- Lifespan: Most species live 1 to 2 years. They’re slow movers, slow reproducers, and not aggressive in any way.
Millipedes vs Centipedes (Don’t Confuse Them)
This is the single most common identification mistake we see homeowners make on millipede calls. The two creatures look superficially similar but behave very differently.
Millipedes are slow, harmless plant-matter eaters. Centipedes are fast, predatory, and can deliver a painful bite.
Quick reference for distinguishing millipedes from centipedes:
| Feature |
Millipede |
Centipede |
| Legs per body segment |
2 pairs (4 legs) |
1 pair (2 legs) |
| Body shape |
Round, tube-like, segmented |
Flat, more ribbon-like |
| Speed |
Slow, deliberate movement |
Fast, darting movement |
| Diet |
Decaying plant matter |
Other insects and small invertebrates |
| Defense |
Curls into a tight spiral |
Runs away, can deliver a mild bite |
| Danger to humans |
None |
Bite can sting, similar to a bee |
If you found something moving slowly, curled up when you got close, and looks tube-shaped, it’s almost certainly a millipede. If something darted away fast on flat legs, it was a centipede. Both can show up in the same conditions (damp basements, leaf litter), but treatment and concern levels differ. For the broader category of misunderstood “creepy” household pests, see our granddaddy long legs guide, which covers another commonly feared but harmless household visitor.
Why Are There So Many Household Millipedes in Your House?
Millipedes don’t choose to be indoors. They end up in homes because the conditions outside become inhospitable and your basement, crawl space, or laundry room offers what they need: moisture and shelter. Four conditions reliably push millipedes indoors in the Southeast:
Heavy Rain or Saturated Soil
The most common trigger for a sudden millipede invasion is a heavy spring or fall rainstorm. When soil becomes waterlogged, millipedes move to higher ground. If “higher ground” is the dry concrete of your basement floor, that’s where they go. We see millipede calls spike within 48 hours of major rain events across Georgia, Alabama, and Tennessee.
Drought or Extreme Dryness
The opposite condition triggers a similar response. During extended dry periods, outdoor environments become too dry for millipedes to survive. They migrate toward any source of moisture, which often means crawling under doors, through foundation cracks, or up basement window wells to find indoor humidity.
Yard Conditions Around the Foundation
Yards that hold moisture against the house make millipede invasions more likely. The biggest contributing factors:
- Heavy mulch beds within 3 feet of the foundation (especially wood chip mulch)
- Leaf litter that accumulates against the house
- Decorative stones or wood timbers laid directly on soil
- Irrigation systems that spray foundation walls
- Downspouts that empty within 2 feet of the foundation
- Stacked firewood, lumber, or yard debris near the house
Indoor Moisture and Cracks
Millipedes can’t enter a house without an opening, and they can’t survive indoors long without humidity. Both have to be present. Common entry points:
- Foundation cracks at grade level
- Gaps under exterior doors (especially garage side doors and basement hatches)
- Unsealed crawl space vents
- Window wells with cracked or missing covers
- Gaps around utility line penetrations
- Weep holes in brick veneer that aren’t screened
Indoor conditions that let them stick around once inside: damp basements, leaking pipes, condensation on cold water lines, poor ventilation in crawl spaces, and standing water in floor drains.
Signs of a Millipede Presence
Most homeowners notice millipedes because they see them directly. Other signs to watch for:
- Live sightings on basement or crawl space floors, especially after rain or in early morning hours.
- Curled-up “dead” millipedes in dry indoor environments — the spiral defense posture also happens when they die from dehydration indoors. Finding several curled millipedes in a basement corner is a sign that more are entering and dying.
- Movement after rain. If you see a single millipede the day after a thunderstorm, you’ll probably see more over the next 48 hours.
- Clusters near damp areas like basements, laundry rooms, bathrooms, and crawl space access points.
- Shed exoskeletons in undisturbed corners, which suggests an established indoor population rather than just visitors.
Are Household Millipedes Harmful?
No. Household millipedes do not bite, sting, transmit disease, damage structures, contaminate food, or harm pets. They are completely harmless to humans and pets.
Three small caveats:
- Defensive secretions. Some millipede species release a mild liquid when handled or threatened. The secretion can stain skin briefly and irritate eyes if rubbed in. Wash hands after handling any millipede. Don’t let pets eat them in large numbers — the secretion can cause mild mouth irritation in dogs and cats.
- Allergic reactions. A small percentage of people have allergic skin reactions to millipede secretions. Reactions are mild (redness, itching) and resolve quickly.
- Dead millipede smell. Large numbers of dead millipedes in basement corners can develop a faint, unpleasant odor as they dry out. Vacuum them up promptly.
The UGA Extension Bulletin B 1412 on Southeastern household pests classifies millipedes as a “nuisance pest” — uncomfortable to encounter but not harmful.
How to Prevent Household Millipedes
The most effective millipede prevention works on three fronts: outdoor conditions, entry points, and indoor moisture.
A 3-foot mulch-free zone around the foundation is the single highest-impact millipede prevention move for most Southeast homes.
Outdoor Conditions
- Keep mulch beds at least 3 feet from the foundation. If you have mulch right against the house, that’s the single biggest contributor to millipede invasions. Replace the foundation perimeter with gravel, river rock, or bare soil.
- Remove leaf litter from the foundation line. Rake regularly during fall and after storms.
- Move firewood, lumber, and debris piles at least 20 feet from the house.
- Direct downspouts and irrigation away from the foundation. Pooling water within 2 feet of the house is millipede paradise.
- Trim shrubs back so air can circulate against the foundation. Damp, shaded foundation walls hold millipedes longer.
Seal Entry Points
- Caulk foundation cracks at ground level.
- Install or replace door sweeps and weatherstripping, especially on garage doors and basement hatches.
- Screen crawl space vents with galvanized 1/4-inch hardware cloth.
- Cover window wells with rigid plastic or metal covers.
- Seal gaps around utility line penetrations with steel wool and caulk.
Indoor Moisture Control
- Fix leaky pipes promptly. Even small leaks support indoor millipede populations.
- Run a dehumidifier in basements and crawl spaces.
- Improve ventilation in bathrooms and laundry rooms.
- Don’t store cardboard boxes directly on damp basement floors.
How to Get Rid of Household Millipedes
Once millipedes are already inside, the treatment approach is straightforward.
DIY Methods
- Vacuum them up. A regular vacuum with a hose attachment handles individual millipedes quickly. Empty the canister or bag outside afterward.
- Sweep into a dustpan. Slower but works for small numbers.
- Reduce indoor humidity. A dehumidifier in active areas often resolves an indoor population within a few weeks. Without moisture, millipedes can’t survive indoors.
- Skip insecticide sprays. Indoor sprays don’t work well on millipedes because they don’t stay in one place long enough to absorb the active ingredients. Sprays also leave residue that’s unnecessary for a harmless pest.
For ongoing prevention while you address the conditions, see our companion guide on natural ways to remove and prevent millipedes in your house.
When to Call Northwest
Most millipede problems clear up once you fix the outdoor conditions and seal the entry points. Call us if:
- Indoor sightings continue for more than 2 weeks despite your prevention efforts.
- You’re finding more than 10 to 15 millipedes per day in any single room.
- You can’t identify the entry points and want a professional inspection.
- You’re dealing with millipedes plus another pest (centipedes, sowbugs, springtails). All share the same moisture-driven entry pattern and can be solved together.
(Persistent millipede problem? Schedule a free Northwest inspection and we’ll find the entry points and address the moisture issues driving them indoors.)
Household Millipedes & Local Environmental Factors
Millipede pressure in Georgia, Alabama, Tennessee, and South Carolina is consistently higher than in drier or colder regions. Three Southeast-specific factors:
- Humidity. Long humid summers create constant indoor and outdoor moisture, which sustains millipede populations year-round.
- Heavy spring and fall rains. The Southeast’s two rainy seasons drive the two annual peaks in indoor millipede sightings.
- Construction patterns. Many Southeast homes have crawl spaces and slab additions with foundation features (cracks, vents, soffit gaps) that are reliable millipede entry points.
The good news: the conditions that attract millipedes also attract other “moisture pests” (sowbugs, springtails, centipedes, sometimes ground beetles). Fixing the conditions for millipedes generally fixes the conditions for all of them at once.
Frequently Asked Questions About Household Millipedes
Do millipedes bite?
No, household millipedes do not bite humans or pets. They have no biting mouthparts capable of penetrating skin. Some species release a mild defensive secretion when handled, which can briefly irritate sensitive skin. Wash hands after handling.
Are millipedes attracted to lights?
Not typically. Unlike many flying insects, millipedes don’t navigate by light. They’re drawn to moisture, organic matter, and dark sheltered spaces. If you’re seeing them near lights, it’s usually because the lighted area happens to have moisture or shelter nearby, not because of the light itself.
Will household millipedes go away on their own?
They can. If the outdoor conditions that drove them indoors change (rain stops, drought ends, mulch dries out), most millipedes will leave or die from dehydration within a few days. However, large indoor populations or homes with persistent moisture issues usually need active intervention to fully clear.
How long do household millipedes live?
Most household millipede species live 1 to 2 years in the wild. Indoors, they typically don’t survive long without consistent moisture access. The “dead millipede” curls you find in dry basement corners are often individuals that entered seeking moisture and dehydrated before finding any.
What’s the difference between a household millipede and a centipede?
Millipedes have 2 pairs of legs per body segment, move slowly, eat decaying plant matter, and curl into a spiral when threatened. Centipedes have 1 pair of legs per body segment, move fast, are predatory (they eat other insects), and can deliver a mildly painful bite. Both can show up indoors in similar conditions, but only centipedes warrant any caution.
Most millipede problems get solved by fixing the outdoor conditions and sealing the entry points — not by spraying inside.
Stop the Millipede Problem at the Source
If household millipedes keep showing up in your basement, laundry room, or crawl space, the answer almost always lies outside the house. Northwest’s team handles the full millipede workflow: identifying the moisture and entry-point conditions driving them in, sealing the access points, and addressing any underlying drainage or humidity issues. Most homeowners are surprised how much of the work happens around the foundation rather than inside.
About the Author
Anna V., Editorial Lead — Pest Education leads pest education content for Northwest Exterminating, working with senior technicians and service center managers across our Georgia, Alabama, Tennessee, and South Carolina service areas to translate field expertise into homeowner-friendly guides. The focus: accurate, regionally-specific answers to the pest questions Southeast homeowners are actually searching for.
Sep 27, 2018 | Pest Control
Ladybugs are said to be a sign of good luck, but when you start to find them crawling all over the inside of your home, you don’t feel as lucky.
Ladybugs, or Asian Lady Beetles, are just one of the pests that will try to use your home for overwintering. Overwintering is the process of insects passing the winter season, and your home poses as the ideal habitat for this practice.
Temperatures drop, and pests such as house spiders, boxelder bugs, ladybugs, millipedes, stink bugs, and even smokybrown roaches, will make their way in your home to hide during the cold weather. Come spring, these pests will emerge in and around your home in MASSIVE numbers.
The best preventive measures to stop overwintering pests, luckily enough, are DIY!
- Seal entry points around doors and windows. Also, look for any cracks and crevices to seal.
- Invest in weather-stripping around your home.
- Use yellow bulbs for outdoor lighting; these pests are attracted to light, and this will help deter them.
- Utilize a vacuum for removal; both stink bugs and ladybugs will leave behind foul odors or liquid when smushed.
If you feel you have an issue with any of these overwintering pests, call you licensed pest professional to schedule an inspection right away.
