House centipedes are fast-moving, predatory arthropods commonly found in basements, bathrooms, crawlspaces, and laundry rooms. Though harmless to humans, their sudden appearance and spider-like form cause frequent homeowner complaints.
Identification & Behavior
Centipedes have elongated flattened bodies with one pair of legs per segment. House centipedes possess extremely long legs and antennae and move rapidly when disturbed.
Why Centipedes Appear Indoors
Centipedes follow prey. Homes with ants, cockroaches, flies, or silverfish provide ideal hunting grounds. High humidity and dark voids support survival.
DIY Prevention Methods
- Reduce humidity using ventilation and dehumidifiers
- Seal foundation gaps and plumbing penetrations
- Remove basement and garage clutter
- Eliminate other insect populations
Natural & Non-Chemical Controls
- Sticky glue boards for monitoring
- Diatomaceous earth in wall voids
- Vacuuming visible individuals
- Essential oil deterrents (peppermint, tea tree)
Store-Bought Control Options
- Residual perimeter insecticides
- Crack-and-crevice sprays
- Insect growth regulators
When to Call a Professional
Recurring centipede sightings often indicate hidden moisture or insect infestations that require professional inspection.