Yes—house centipedes hunt roaches, ants, spiders, silverfish, moths, flies, and other small arthropods that live indoors.
What Centipedes Eat In Houses: Room-By-Room Guide
House centipedes track down live prey that roam the same corners we forget: drain rims, damp wall gaps, cardboard stacks, and the shadow lines along baseboards. In bathrooms they pick off drain flies and silverfish. In kitchens they run down roaches and ants. Basements and crawl spaces deliver spiders, sowbugs, and crickets. Bedrooms and closets can offer moths and carpet beetle larvae, especially where fabrics sit still for months.
Most of this hunting happens at night. During the day, centipedes hide in tight, humid spots: the lip under a cabinet toe-kick, the gap behind a baseboard, the ring around a floor drain, or the space under a storage bin. When lights go off, they sprint, grab, and inject venom through modified front legs.
House Centipede Diet At A Glance
If you’re seeing more than one centipede each week, you likely have enough prey to keep them fed. Here’s a map of what they chase and where they find it.
| Prey | Typical Hideout | Signs You’ll Notice |
|---|---|---|
| Cockroaches | Warm gaps near ovens, dishwashers, sinks, and cardboard piles | Droppings like black pepper, shed skins, egg cases |
| Ants | Wall voids, window frames, counters, food spills | Trailing lines, tiny soil cones by cracks |
| Spiders | Basements, garages, ceiling corners, storage rooms | Webs, dead insects caught in silk |
| Silverfish & Firebrats | Bathrooms, laundry rooms, boiler rooms, closets | Grazed paper, tiny yellow scales on shelves |
| Carpet Beetle Larvae | Closets, wool rugs, stored fabrics, linty baseboards | Threadbare patches, shed larval skins |
| Flies & Drain Flies | Sinks, floor drains, trash cans, fruit bowls | Adults resting on walls near drains, larvae in slime |
| Clothes Moths | Closets with wool, cashmere, fur, or stored quilts | Flying near garments, small tan cases, chewed fibers |
| Earwigs | Cool, damp cracks near entry doors and garages | Night sightings, leaf damage on nearby plants |
| Crickets | Basements, garages, stored boxes, under appliances | Chirping at night, frayed fabrics |
| Pillbugs & Sowbugs | Basement perimeters, slab cracks, under stored items | Night crawl near floor edges, curled bodies when touched |
Centipedes Don’t Eat Your Food Or Furniture
Centipedes are carnivores. They don’t chew cereal boxes, drywall, or table legs. They want live prey that moves. No movement, no meal. If you find one in a pantry, it wandered in chasing roaches or moths. It didn’t come for the flour.
That also means baits designed for plant-eating pests won’t sway them. Sticky traps can catch a few runners, but the number one way to thin the herd is to take away the prey and the damp hideouts that shelter it. You’ll see fewer legs once the menu shrinks.
Why You Keep Seeing Them: Food And Moisture
Food first. Roaches thrive where grease and crumbs linger. Ants build highways to sweet drips and pet bowls. Silverfish find starch in paper, glue, and cotton. Drain flies breed in slimy film inside pipes and floor drains. Each of these adds a course to the centipede menu. Fewer pests equals fewer predators roaming at night.
Moisture next. Centipedes lose water fast, so they hunker down where air stays damp and cool. Basements, crawl spaces, and bathrooms are perfect. Leaky traps, sweating pipes, and wet mops help them stick around. Dry spaces push them out fast.
Centipedes Eating In The House: Facts And Fixes
Think of house centipedes as quick cleanup crews for bugs you don’t want. They do offer a small bit of help by thinning roaches, moths, and spiders, though they won’t erase an infestation by themselves. If you don’t want to share space, aim your effort at the food chain below them and at the damp corners that let both prey and predator hide.
Evidence-Based Menu: What’s Actually On The Plate
Trusted extension guides agree on the core diet: roaches, silverfish, firebrats, spiders, ants, crickets, earwigs, flies, and soft-bodied larvae such as carpet beetle larvae. Some reports mention sowbugs and pillbugs along slab edges. In a pinch, a centipede may scavenge a dead insect or even cannibalize a smaller cousin. Rare indoor sightings near bed frames often trace back to existing pests like bed bugs or spiders, not people.
Room Hotspots And What They’re Eating
Bathroom
Expect drain flies near floor drains and sink overflows. Silverfish hide behind baseboards, under tubs, and around damp paper goods. Caulk gaps around fixtures and run the fan after showers.
Kitchen
Warm motor bays under refrigerators and dishwashers let roaches multiply. Ants track to sugar, syrup rings, and pet food. Wipe grease, store food in tight bins, and empty the trash nightly.
Basement And Crawl Space
Spiders and crickets like undisturbed edges. Pillbugs and sowbugs slip in through slab cracks. Dehumidify, repair leaks, and lift boxes off the floor on shelves.
Closets And Bedrooms
Clothes moths and carpet beetle larvae target natural fibers. Vacuum baseboards and under beds. Bag long-stored garments and wash woolens before storage.
Garage And Entry Areas
Crickets and earwigs duck under thresholds. Weather-strip doors, sweep floors, and move firewood and mulch away from the foundation.
How Centipedes Hunt Indoors
Speed And Grip
Those long legs aren’t just for show. A house centipede can dash across tile, up walls, and under a door sweep in a blink. Each step ends in a sharp tip that grips tiny pores in wood and paint. The body stays flat, letting the legs scissor past obstacles without snagging. This design helps them chase nimble prey like roaches and flies in tight quarters.
Venom And Safety
The first pair of legs has a fang-like tip that delivers venom into prey. It’s built to subdue insects and other arthropods. Bites to people are uncommon and mild. If one nips, wash the spot and move on. Pets tend to avoid them after a quick sniff.
Where The Chase Happens
Centipedes hug edges. They run along baseboards, pipe chases, and sill plates. That’s where prey travels too. Set monitors on those edges and you’ll see both predator and prey on the same glue board. Track counts weekly to see if your cleanup work is paying off at home.
Seasonal Patterns You’ll Notice
Warm months bring more activity. Windows open, humidity rises, and prey builds up. In colder months, you might see a sudden wave as outdoor hunters slip inside to find steady warmth and moisture. New builds and recent renovations can also stir things up by exposing gaps and bringing in fresh cardboard, which draws roaches and moths.
Rainy spells matter too. After a week of wet weather, basements and first-floor baths get humid. That’s a cue for silverfish, drain flies, and sowbugs. Centipedes follow the food. Dry spells flip the script. Dehumidifiers and fans cut activity fast.
Drain And Crack Checklist
Give yourself one focused weekend to knock out the hotspots. Work through this list and you’ll trim the centipede menu while making the house feel cleaner.
- Pull sink stoppers and scrub the gunk where metal meets porcelain.
- Pour a bio-enzyme gel into floor drains at night so it sits on slime.
- Brush the rubber gaskets on dishwashers and front-load washers.
- Vacuum under the fridge, then wipe the back wall and the motor bay.
- Bag wool sweaters and quilts; label the bags so they get rotated.
- Swap soft, damp boxes for lidded plastic bins that stack tight.
- Seal a dozen obvious gaps: tub edges, pipe cutouts, and baseboard seams.
- Drop sticky monitors along wall edges in kitchens, baths, and basements.
Signs Of A Food Source Hiding Nearby
Centipedes don’t appear at random. There’s nearly always a trail of clues for the prey they chase. Scan these spots and you’ll piece the story together fast.
- Roach clues: pepper-like droppings, oval egg cases, and shed skins under sinks and behind the stove.
- Ant clues: steady lines across baseboards and counters, tiny soil cones near window frames, and sugar raids at night.
- Silverfish clues: feeding marks on paper, loose scales on closet shelves, and small holes in starched fabrics.
- Moth clues: adults circling a closet, buff-colored cases stuck to wool rugs, and threadbare patches along edges.
- Drain fly clues: fuzzy adults resting near sinks and floor drains, larvae wriggling in the slimy ring.
- Spider clues: fresh webs in upper corners and insect husks below the web line.
Do Centipedes Eat Bed Bugs Or Termites?
Both can end up on the menu in the right setting, but only as chance snacks. A centipede that roams a bed frame at night may grab a bed bug that strayed from a seam. One running along a damp sill might catch a termite swarmer that bumbled indoors during swarming season. That doesn’t translate into control. If you see bed bugs or find termite wings, call a pro for that specific issue and keep working the moisture and sealing steps listed above.
Centipedes Versus Millipedes: Food Is The Difference
The two look similar at a glance, yet they eat totally different things. Centipedes are flat, quick, and chase live prey. Millipedes are rounder and slow. They curl into a coil when touched and feed on decaying leaves and mulch. That’s why a bathroom runner is nearly always a centipede, not a millipede. If you’re seeing lots of curled brown cylinders near doors after rain, that’s a millipede flush from the yard, not hunting behavior.
Quick Myths That Lead People Astray
- “They came for the cereal.” They came for the roaches eating the cereal dust, not the cereal itself.
- “They live in the drain.” They hunt around drains where prey breeds, then hide in nearby cracks.
- “They mean the house is dirty.” Even tidy homes have micro-spills, paper starch, and humid corners. Target those, not blame.
- “They bite pets.” Pets usually sniff and step back. Keep pet dishes clean and you cut the food chain without worry.
Table: Rooms, Likely Prey, And Fast Fixes
| Room/Spot | Likely Prey | Fast Fix |
|---|---|---|
| Bathroom | Drain flies, silverfish | Clean drain slime, run fan, seal tile gaps |
| Kitchen | Cockroaches, ants, moths | Wipe grease, seal food, empty trash nightly |
| Basement | Spiders, crickets, pillbugs | Dehumidify, fix leaks, raise storage |
| Closets | Carpet beetle larvae, clothes moths | Vacuum lint, bag off-season fabrics |
| Bedroom | Spiders, rare bed bugs | Launder bedding hot, reduce clutter, inspect bed frame |
| Garage | Crickets, earwigs | Weather-strip, sweep, store boxes on shelves |
| Laundry | Silverfish, moths | Dry wet spots, store detergents tight, clear lint |
If You Only Do Three Things
- Dry the damp. Run fans, fix leaks, and lower basement humidity. Dry air pushes both prey and predators away.
- Clean where food hides. Deep clean the stove, the sink cabinet, and the fridge bay. Store staples in hard, tight bins.
- Seal the edges. Caulk baseboards and pipe cutouts, and add fresh weather-stripping at doors. Fewer gaps mean fewer bugs to chase.
Bottom Line On Food And Fixes
Centipedes in the house tell a simple story. There’s food and there’s moisture. Take those away and the runners fade. Keep counters dry, clean drain film, seal baseboards, and store fabrics and food in ways that don’t feed the prey beneath them. Whether you let a few patrol or want a zero-sighting home, the same steps win: starve the bugs they chase and dry the corners they share.
Trustworthy Resources For Quick Checks
For a straightforward overview of house centipede diet, see the Penn State Extension page. For a clear home guide that covers where they hide and what they catch, review the UC IPM Pest Notes. For a short fact sheet that lists indoor prey, read the University of Kentucky entomology note.