If you’ve ever found a long, many-legged creature crawling across your basement floor, you’ve probably wondered what millipedes eat and why they decided to visit your home. As a licensed technician with Better Termite & Pest Control, I get this question often from homeowners throughout Northern Virginia and the DC metro area. Understanding what millipedes eat is the first step toward keeping them outside where they belong.
The short answer? Millipedes are detritivores, which means they primarily feed on decaying organic matter like dead leaves, rotting wood, and decomposing plant material. But there’s a lot more to their diet and feeding habits that can help you prevent an infestation.
What Do Millipedes Eat in the Wild?
Millipedes are nature’s recyclers. In their natural outdoor habitat, they play an important role in breaking down organic matter and returning nutrients to the soil. According to Clemson University’s Home & Garden Information Center, millipedes are beneficial “recyclers” that help decompose dead vegetation.
Here’s what millipedes commonly feed on outdoors:
- Dead leaves and leaf litter - Their primary food source
- Rotting wood and bark - Especially from hardwood trees like oak and maple
- Decaying plant roots and stems - Found in moist soil
- Fungi and mushrooms - A favorite supplemental food
- Moss and lichens - Often found on damp surfaces
- Decomposing fruits and vegetables - Fallen produce in gardens
Millipedes have specialized mouthparts designed for chewing and grinding plant material. They use their mandibles to break off small pieces of food, then excrete a digestive liquid from glands in their mouths that softens the material before they swallow it.
According to entomologists, millipedes have glands within their mouths that excrete a digestive liquid to soften their food. Once broken down, the food passes to their stomach where enzymes and beneficial fungi help further process the plant matter. This is why millipedes prefer moist environments - the humidity helps them break down food more efficiently. They typically feed at night when conditions are cooler and damper.
What Do Millipedes Eat Inside Your Home?
When millipedes venture indoors, their diet doesn’t change much. They’ll seek out whatever decaying organic matter they can find. Inside homes, this typically includes:
- Dead insects - Including their own molted exoskeletons
- Damp cardboard and paper products
- Mold and mildew - Common in basements and bathrooms
- Potted plant soil and decaying roots
- Pet food left out in damp areas
- Organic debris in floor cracks
One homeowner I spoke with had a problem with millipedes in her basement. After an inspection, we determined that the cause of the issue was the high moisture content of the soil around her home. The millipedes had plenty of decaying organic matter to eat in her mulch beds, and when conditions got too wet, they moved inside seeking drier ground. Once we addressed the moisture issue and removed the thick mulch from against her foundation, the problem was solved.
The good news is that millipedes don’t eat structural materials like wood framing, insulation, or fabric. They’re not interested in your furniture, clothing, or food pantry items. They’re simply looking for damp organic matter to munch on.
Do Millipedes Eat Living Plants?
Most millipedes strongly prefer decaying matter over living plants. However, there are a few exceptions worth knowing about.
The Greenhouse millipede (Oxidus gracilis) is one species that can feed on fresh plant material. These millipedes occasionally cause damage to:
- Seedlings and young transplants
- Soft fruits like strawberries touching the ground
- Tender roots in potted plants
- Greenhouse crops in humid conditions
For home gardeners in the DC metro area, millipedes are almost always beneficial. They break down organic matter faster than it would decompose naturally, which enriches your soil. Unless you’re seeing direct feeding damage on healthy plants, consider millipedes helpful garden residents.
Now that you understand what millipedes do and don’t eat, let’s look at how this knowledge helps you keep them out of your home.
Why Understanding Millipede Diet Helps with Prevention
Knowing what millipedes eat is key to keeping them out of your home. Since they need decaying organic matter and moisture to survive, removing these attractants makes your property much less appealing.
According to the Alabama Cooperative Extension System, the most effective long-term measure for reducing millipede entry is to reduce excess moisture and hiding places near your foundation.
How to Remove Millipede Food Sources
Here are practical steps to make your property less attractive to millipedes:
Around your foundation:
- Remove leaves, grass clippings, and debris from against the house
- Keep mulch beds thin (2-3 inches max) and at least 6 inches from the foundation
- Clear away wooden boards, stones, and boxes lying on the ground
- Remove rotting wood, old tree stumps, and decaying landscape timbers
In your yard:
- De-thatch your lawn to improve air circulation
- Water in the morning so grass dries before nightfall
- Rake up fallen leaves regularly, especially in fall
- Turn compost piles frequently and keep them away from the house
Inside your home:
- Fix any leaky pipes or faucets
- Use dehumidifiers in damp basements
- Improve ventilation in bathrooms and laundry rooms
- Remove cardboard storage boxes from basement floors
The NC State Extension notes that millipedes cannot survive long in dry environments. They need moisture both to breathe (through small pores along their body) and to digest their food properly. By eliminating moist conditions, you make your home inhospitable to millipedes even if some organic matter remains.
When Millipedes Become a Problem
Millipedes typically stay outdoors and cause no issues. But certain conditions can trigger mass migrations that send hundreds or even thousands of millipedes toward your home:
- Heavy rainfall - Floods their underground habitats
- Extended drought - Drives them to seek moisture
- Fall weather changes - Cooling temperatures push them to find shelter
- New construction - Disturbs their habitat
During these events, millipedes can enter homes in large numbers. While they’re not dangerous and don’t cause structural damage, finding dozens of these creatures in your basement or garage is certainly unpleasant.
Professional Millipede Control Options
If you’re dealing with a significant millipede problem, professional pest control services can help. According to Iowa State University Extension, insecticides have limited effectiveness because millipedes often migrate from protected areas far from where treatments are applied.
However, residual perimeter treatments can reduce the number of millipedes entering your home during active migration periods. At Better Termite & Pest Control, we use EPA-approved products that create a barrier around your foundation. These are products our team of registered technicians would feel comfortable using in our own homes.
The most effective approach combines:
- Habitat modification - Removing food sources and reducing moisture
- Exclusion - Sealing cracks and gaps where millipedes enter
- Targeted treatments - Applied to entry points and perimeter areas
With over 57 years in the pest control industry and more than 1,000 five-star reviews, we’ve helped countless homeowners in the DC metro area deal with millipede problems. Our approach focuses on long-term prevention rather than temporary fixes.
Millipedes vs. Centipedes: A Quick Comparison
People often confuse millipedes with centipedes, but their diets are completely different:
| Feature | Millipedes | Centipedes |
|---|---|---|
| Diet | Decaying organic matter | Live insects and spiders |
| Movement | Slow, deliberate | Fast, darting |
| Body shape | Round, cylindrical | Flat |
| Legs | Two pairs per body segment | One pair per segment |
| Danger | Harmless | Can bite (painful but not dangerous) |
Centipedes are predators that hunt live prey, while millipedes are peaceful decomposers. If you’re finding fast-moving, flat creatures in your home, those are likely centipedes - and they have a completely different diet and behavior pattern.
Get Help with Millipede Problems
Understanding what millipedes eat helps explain why they show up in certain areas and how to prevent them. By removing their food sources - decaying organic matter - and reducing moisture around your home, you can make your property much less attractive to these many-legged visitors.
If you’re dealing with a millipede infestation or want to prevent one, our team is here to help. We serve homeowners throughout Northern Virginia, Alexandria, Bethesda, and the surrounding DC metro area.
Give us a call at 703-683-2000 or email us at info@bettertermite.com to schedule an inspection. We’ll identify what’s attracting millipedes to your property and create a customized plan to keep them outside where they belong.
