House centipedes prey on other arthropods. Repeated sightings can indicate that the building offers moisture, hiding places, and a steady supply of small insects.
Notice where they appear
Basements, bathrooms, laundry areas, and plumbing penetrations are common locations. An occasional individual wandering in from outdoors is different from persistent indoor activity.
Reduce persistent moisture
Repair leaks, improve ventilation, and address condensation. A dehumidifier can help in a genuinely damp basement after the source of moisture is understood.
Remove shelter and reduce prey
Vacuum dust, dead insects, and webbing; organize boxes resting in damp corners. If cockroaches, silverfish, or other insects are abundant, that population may be supporting centipedes.
Seal entry routes
Inspect baseboard gaps, pipe penetrations, doors, and windows. Weatherstripping and sealing reduce movement without blanket pesticide treatment.
Know when the pattern deserves more investigation
High continuous activity together with obvious dampness or many other pests is a reason to investigate the environment. A pest professional can identify the species and contributing conditions without treating the entire home indiscriminately.
Reducing moisture and prey usually reduces centipede encounters as a side effect.
Sources
- Penn State Extension — House Centipedes — House-centipede behavior, moisture, prey, exclusion, and when indoor activity is significant.