Yes—house centipedes eat live arthropods such as roaches, spiders, silverfish, flies, moths, earwigs, and bed bugs inside damp, dark spots.
What house centipedes eat indoors
House centipedes are night hunters that run fast, stalk quietly, and pounce on soft-bodied or small hard-bodied pests. Inside a home they target moving prey, not crumbs or plants. Typical meals include roach nymphs, small spiders, silverfish and firebrats, carpet beetle larvae, crickets, flies, moths, earwigs, and bed bugs. When you see one dash across a wall, it’s chasing food that already lives there.
They don’t chew wood or fabrics, don’t nibble houseplants, and don’t touch stored grain. They want water and a steady supply of insects or other arthropods. That’s why they show up in damp rooms, near drains, or where clutter shelters prey.
You can verify this list with land-grant fact sheets and state wildlife pages that track indoor pests.
| Prey | Where it’s caught | Clue you might see |
|---|---|---|
| Roach nymphs | Kitchens, basements, wall voids | Specks near appliances, musty odor |
| Spiders | Corners, storage rooms, garages | Webs in ceiling angles or behind boxes |
| Silverfish & firebrats | Bathrooms, closets, attics | Paper or book edges grazed, tiny scales |
| Carpet beetle larvae | Baseboards, under rugs | Shed larval skins, patchy fabric damage |
| Crickets & earwigs | Basements, entry thresholds | Chirping at night, small black droppings |
| Flies & moths | Laundry rooms, windows | Adults at lights, dead insects in sills |
| Bed bugs | Bed frames, baseboards | Fecal spots on seams, shed skins |
Do house centipedes eat roaches and spiders?
Yes. Roach nymphs are bite-sized and easy for a fast predator to corner. Web-building spiders are ambushed on walls, while wandering spiders get chased down across floors. A single centipede can thin out hotspots, especially in tight spaces a shoe can’t reach.
If you spot many centipedes, it usually means there’s plenty of prey on site. In that case, deal with the food source first. Dry the space, tidy the clutter that shelters insects and arachnids, and remove easy moisture like standing water in trays or sump pits. Roach baits and sticky cards for silverfish pair well with a dehumidifier; together, they cut off the centipede’s food supply and shrink sightings.
That same pattern shows up across many guides: frequent centipedes point to abundant prey. Fix that first and the predator fades on its own.
How house centipedes catch and eat
Those long “fangs” are actually a modified front pair of legs called forcipules. They pierce and inject venom into prey, then hold it while the mouthparts finish the job. The rest of the legs help pin, wrap, or even lasso fast insects. Add keen antennae and you get a skilled indoor hunter that runs across floors, up walls, and along ceilings with ease.
Speed matters here. A house centipede can sprint, pivot, and reverse direction in a blink. It uses walls and corners as funnels to trap insects, then relies on reach to keep struggling prey away from its body. If a leg gets stuck, it can shed the leg and keep moving.
Centipedes are almost all meat-eaters, and this one fits the pattern. The body plan is built for stalking and grappling. Long legs give reach, the flexible body slips into crevices, and the forcipules deliver a quick sting that shuts down motion. You’ll sometimes see a centipede holding one insect while chasing a second—a testament to those extra legs and that steady grip.
Across many references, the same food shows up indoors: cockroaches, crickets, sowbugs, silverfish, and spiders. It’s a generalist that takes what a room offers.
What they never eat
House centipedes don’t eat crumbs, sugar, cereal, pasta, pet kibble, or fruit. They don’t chew wood, drywall, or wiring. They don’t feed on wool or cotton; if your sweater has holes, that’s a fabric pest, not this predator. They don’t graze on houseplants. If you remove their prey, they go elsewhere or starve.
It’s common to blame any indoor damage on the first creature you see. With this animal, the harm is almost always from the insects it hunts. Think about paper scraped by silverfish, larval skins from carpet beetles, or roach smears behind a fridge. The centipede arrives later, drawn by that buffet. Seeing one is a clue, not a cause.
They may sip from damp sinks or tub rims after dark. Wipe those surfaces dry at night to cut both prey traffic and centipede patrols at once.
Why you keep seeing them
These hunters need water and shelter. Basements, bathrooms, crawl spaces, laundry rooms, and tight storage areas check both boxes. Leaky traps, damp tubs, humid corners, and cardboard stacks all invite roaches, silverfish, and spiders. The centipede follows the crowd. You’ll see most activity at night when lights flip on and prey starts to move.
Frequent sightings often track with a prey bloom. If you’ve had a wet week, an AC outage, or new clutter from a move, prey can surge. Reduce the damp, run a fan or dehumidifier, and clean up piles that create hidden runs. Snap traps for roaches or sticky monitors for silverfish tell you where the food is moving.
Cooler months push many insects indoors, and spring rains can do the same. That’s why sightings cluster in certain seasons. Dry rooms and tidy storage dull those peaks. In small numbers, centipedes help keep spiders and roaches in check. Large numbers say the buffet is still open.
Room by room: where the food lives
Kitchen. Warm motors and crumbs pull roaches and pantry moths. Wipe grease films, vacuum under appliances, and store staples in tight containers. Repair drips under the sink; puddles plus crumbs are a roach magnet.
Bathroom. Steam and paper draw silverfish and firebrats. Ventilate after showers, caulk gaps at baseboards, and move papers and boxes off the floor. Run an exhaust fan long enough to dry tile and grout.
Basement. Concrete sweats and cardboard stacks create shelter. Keep storage on shelves, off the slab. Seal utility penetrations, and add door sweeps to exterior entries. A small fan keeps corners dry.
Bedroom. Bed bugs hide in seams and trim. Use tight encasements, reduce clutter near the bed, and check secondhand items before they enter the room. If you find bed bugs, use professional control; a lone centipede can’t finish that job.
Laundry room. Lint and drips invite flies and moths. Clean screens on floor drains, fix loose hoses, and sweep lint traps and corners. Store detergent pods and powders tightly and keep baskets off the floor between loads.
Coexist or control: smart choices
Some homeowners let a few centipedes patrol out-of-the-way areas. If one shows up where people sleep or bathe, escort it outside using a jar and a stiff card. If you prefer not to share space at all, aim at the food chain: dry the room, remove shelter, and block entry points. Without prey, the hunter leaves.
For larger issues, target the prey first. Baits for roaches and sticky monitors for silverfish and moths work well when placed near runs. Vacuum webs and egg cases, wash fabrics on hot cycles, and rotate stored items so spiders and carpet beetles don’t settle in. After a week or two of steady work, centipede sightings drop. If numbers bounce back, look for a moisture source you missed.
| Room | Reduce prey by | Quick check |
|---|---|---|
| Kitchen | Seal food, clean grease, repair leaks | Pull fridge; look for specks or smears |
| Bathroom | Vent steam, dry mats, remove paper piles | Shine a light along baseboards at night |
| Basement | Dehumidify, lift storage, seal gaps | Inspect around sump and utility lines |
| Bedroom | Encase beds, clear clutter, inspect seams | Check mattress piping for spots |
| Laundry room | Fix drips, clean lint, keep drains flowing | Look into floor drains with a flashlight |
Sealing also keeps prey from wandering back in. Caulk gaps where pipes pass through walls, seat escutcheon plates tight, and run a slim bead along baseboards in rooms that stay humid. Swap corrugated cardboard for lidded plastic bins. If you stack firewood or boxes near the house, shift them a bit farther out so crickets and earwigs don’t stage right by the door on damp nights.
Taking a house centipede outside
Use a clear jar and a card. Trap the animal against a wall, slide the card under the rim, and walk it to a shaded spot outdoors. Gently release near low plants so it can hide at once. No sprays needed, no mess, and zero risk to pets or kids. If the air is chilly, pick a sheltered spot like a rock edge or dense mulch so it can hide and warm quickly. Wear thin gloves if you prefer.
If the centipede keeps returning to the same room, run a simple test. Place two sticky cards along the baseboard a few feet apart and leave them for three nights. If you catch roach nymphs, silverfish, moths, or beetles, you’ve found the reason the centipede won’t leave. Solve that food source and the sightings fade.
What do house centipedes eat in homes and yards
Outdoors, they hunt under stones, boards, planters, and mulch edges where sowbugs, earwigs, and crickets rest. Indoors, the menu shifts to whatever pest thrives in your rooms. The constant theme is moving prey, moisture, and shelter. If you remove two of those three, you break the cycle.
If you want deeper reading from neutral sources, start with these: the Penn State Extension profile, the Missouri species page, and the University of Kentucky’s home centipede note. All three explain the indoor diet plainly and match what people see in kitchens, baths, basements, and bedrooms.
Pets and people: quick notes
Bites are rare. This animal prefers to run, not fight. When bites do happen, pain and swelling are usually mild and short-lived, much like a bee sting, as the Missouri Department of Conservation notes. Keep hands clear, wear gloves when moving stored items, and guide any surprise guest into a jar for release.
Cats sometimes chase and eat small centipedes. That isn’t a meal the centipede chose, and the cat usually loses interest fast. Pick up any dead insects that gather at window sills so the cat doesn’t learn to hunt where glass breaks the view.
Diet myths that refuse to die
“They eat wood.” No. That’s a termite or a wood-boring beetle. This predator lacks the mouthparts for chewing lumber.
“They eat clothes.” No. Holes in wool or cotton point to clothes moth larvae or carpet beetle larvae. The centipede is more likely to remove those larvae, not cause the damage.
“They eat crumbs.” No. Crumbs feed roaches, ants, and moths. The centipede shows up after those pests arrive.
“They drink from pet bowls.” They do need water and may visit any source. Drying the room matters far more than moving a bowl.
Your simple diet-first checklist
1) Dry the space. Run exhaust fans, set a dehumidifier to a steady setting, and repair drips. 2) Remove shelter. Lift storage off floors, recycle excess cardboard, and clear gaps behind appliances. 3) Map the prey. Place sticky monitors near baseboards, under sinks, and behind toilets for three nights. 4) Target the food chain. Use roach gel baits where activity shows and replace spent cards weekly. 5) Seal the gaps. Add door sweeps, screen floor drains, and caulk utility holes.
This series of small steps trims the insects that make up a house centipede’s menu. As the buffet shrinks, sightings taper off. If you keep a single monitor in each trouble room and check it monthly, you’ll spot any new prey wave before the centipedes do.