Key Takeaways:
- House centipedes enter homes to hunt prey, often signaling an underlying infestation of other pests like ants or roaches.
- They are drawn to high-moisture areas such as basements, bathrooms, and crawl spaces.
- Eliminating outdoor hiding spots like leaf piles and sealing foundation cracks can prevent them from moving indoors.
- The most effective long-term solution is professional pest control to remove the insects they feed on.
- While unsettling and capable of a defensive pinch, they are generally non-aggressive and pose little threat to humans.
Why Are House Centipedes Crawling Into Your Home?
With their long legs and lightning speed, house centipedes are hard to ignore once you’ve seen them. These unsettling creatures (also known as Scutigera coleoptrata) may not sting or bite, but their unexpected intrusions can still be unpleasant. If you’ve seen one dash across the floor, you’re likely wondering, “What are they doing here?” and “Should I be concerned?”
So, why are house centipedes in your house? The truth is, they’re just searching for the basics: food, water, and a place to hide. If your home supplies all three, it’s an open invitation for centipedes looking to settle in.
Let’s talk about what’s drawing them inside, and what you can do to stop it.
Why Do House Centipedes Come Inside?
Contrary to their name, house centipedes don’t just live in houses. They’re often born outdoors and seek out cool, damp places like under rocks, woodpiles, compost bins, and leaf litter.
The primary reasons they come inside include following their food inside and seeking out moisture-adjacent rest areas.
Following the Food Chain Indoors
House centipedes often start their lives in your yard, hiding out in shady garden beds, moist mulch, or under rocks. But when food becomes scarce outside, or prey ventures too close to your walls, house centipedes won’t hesitate to follow.
While they do help by hunting other bugs, their arrival usually means something else is already living in your home. In many cases, house centipedes are not the root problem, but a sign that another pest infestation is hiding from you.
So, what do they like to eat? These predators feast on a wide range of insects, such as:
- Ants
- Bed bugs
- Cockroaches
- Crickets
- Earwigs
- Moths
- Silverfish
- Spiders
- Termites
- And many more
They Prefer Damp Environments
Moisture is another major draw for house centipedes. Outdoors, they seek damp places like rotting wood, shaded mulch, and leaf piles. Indoors, they’re likely to turn up in crawl spaces, basements, bathrooms, or anywhere humidity levels are high. Even a few persistently damp areas can create the perfect indoor habitat.
To cut down on moisture, try these strategies:
- Repair outdoor leaks: Check faucets and hoses to prevent water from saturating the soil.
- Maintain gutters: Clean them regularly and ensure water drains away from your foundation.
- Improve drainage: Prune dense plants so rainwater can dry out properly.
- Monitor indoor humidity: Use dehumidifiers in musty rooms, and make sure bathrooms and laundry spaces are ventilated.
Hiding Spots Make Them Want to Stay
Thanks to their nature, house centipedes avoid light and prefer quiet, undisturbed places to rest. Clutter inside and out gives them endless options for shelter. If you want to make your home less welcoming, reducing hiding places is a smart strategy, along with closing off the ways they get in.
Use these simple steps to discourage them:
- Organize firewood: Stack it neatly and elevate it off the ground to avoid attracting pests.
- Declutter the yard: Remove unused items like tools, materials, or furniture that offer shelter.
- Collect outdoor toys: Don’t leave toys or play items on the lawn, they trap moisture and invite bugs.
- Rake regularly: Wet leaves are breeding grounds for the insects centipedes like to hunt.
- Keep the lawn trimmed: Cut grass and remove weeds to limit insect activity.
- Seal openings: Patch cracks in your home’s exterior, repair screens, and fill gaps around windows and pipes.
- Fix door and window gaps: Even tiny spaces are enough for a centipede to sneak through.
Can You Prevent House Centipedes in Your House?
Yes, it is possible, but you have to keep in mind that house centipedes usually begin their journey outside, where it’s tough to control them. These arthropods prefer cool, damp spots sheltered from sunlight and predators. Common outdoor habitats include leaf piles, garden mulch, decaying wood, and the undersides of rocks or bricks.
One area they especially favor is the soil near your home’s foundation. This zone tends to stay moist and shaded and often supports insect populations that centipedes hunt. Once they’re established there, it’s a short trip indoors, especially when the weather turns hot or dry.
Where Do House Centipedes Like to Live Outdoors?
If you’re trying to prevent centipedes from coming inside, the best place to start is your yard. Here are a few places they often hide:
- Garden beds and ornamental plants: These attract small insects like mites and aphids that centipedes like to eat.
- Landscaping stones and bricks: Check underneath, bugs often gather there, making it a perfect feeding ground.
- Improperly sealed garbage bins: Rotting waste brings flies and spiders, which draw in centipedes looking for a meal.
How Do House Centipedes Get Indoors?
To get inside, they use whatever openings they can find: cracks in your foundation, loose-fitting windows, wall gaps, or uncovered vents. That’s where your house centipede prevention efforts should focus. By sealing up these tiny cracks, you can stop them from getting inside.
Eliminate Food Sources in Your House
Aside from sealing up the cracks that house centipedes use to get inside, the best thing you can do is eliminate their food sources from your house. And that means one thing: pest control.
House centipedes won’t come inside if there’s no food source. Or if they do come inside, they won’t survive for long. By taking care of your pest problem, you accomplish two objectives in one: no more pests, and no more house centipedes that want to eat those pests.
Should You Be Concerned If You See a House Centipede?
They may look a bit scary, but house centipedes generally don’t pose a threat. These creatures aren’t aggressive and will usually run away when disturbed. They can bite and sting – and it’s about the same pain level as a bee sting – but they won’t go out of their way to attack. Just don’t try to pick one up.
Like other centipedes, they have venom, but it’s designed for subduing small insects. If picked up or threatened, they may use their front legs to deliver a pinch.
However, people with allergies to insect venom may have a more serious reaction. Symptoms like swelling, trouble breathing, or dizziness after a bite should be treated as a medical emergency.
While most adults experience little more than mild irritation, young children and pets may be more sensitive. Keeping them away from centipedes is always the smarter move.
Tired of House Centipedes Popping Up Indoors?
If you’ve seen one dart across the floor, chances are it’s not alone, and neither are the bugs it’s hunting. House centipedes typically show up when there’s a steady supply of prey, meaning a bigger pest problem may be hiding in plain sight.
To break the cycle, you need more than just a temporary fix. A professional pest inspection can uncover the real reason centipedes are choosing your home. Our team can check for signs of insect activity, identify hiding spots, and create a strategy tailored to your property.
Get in touch today to book your inspection and show those centipedes the door, for good.