How to identify them

House centipedes are unmistakable: a yellowish-gray body an inch or so long fringed with 15 pairs of very long, delicate legs, moving in a fast, almost flickering dash across walls and floors. Their speed and leggy silhouette make them one of the most alarming-looking household bugs, even though they are among the more harmless.

Behavior and biology in South Florida

House centipedes thrive in humidity and are found in the dampest parts of a home — bathrooms, laundry rooms, garages, and around plumbing. They are active hunters that prey on other household pests: roaches, silverfish, ants, spiders, and fly larvae.

Their presence is really a signal of two things — enough moisture to keep them comfortable and enough other insects to eat. They can deliver a minor bite if handled, but they are not aggressive and their bite is comparable to a mild bee sting at worst, and even that is rare.

Signs of an infestation

• Fast, many-legged bugs darting across bathroom or garage walls
• Sightings concentrated in the most humid rooms
• Presence of other pests — their food — nearby
• Activity mostly at night when they hunt

Why they are a problem

House centipedes are largely beneficial, so the issue is usually the startle factor rather than any real harm. That said, a persistent population points to underlying moisture and a supply of other pests, both of which are worth addressing. In numbers they become an unwelcome nuisance in living spaces.

How Bugsy’s treats house centipedes

Since centipedes follow moisture and prey, control targets both: our technicians treat the damp harborage areas and reduce the pest populations centipedes feed on, then apply a targeted perimeter and seal entry points. Addressing the humidity and the underlying insects is what actually clears them, rather than chasing the centipedes themselves.

Preventing house centipedes

• Reduce humidity with ventilation and dehumidification in baths, laundry, and garages
• Fix leaks and eliminate standing water
• Control the other pests centipedes feed on
• Seal gaps around plumbing, doors, and the foundation
• Clear damp clutter and debris where they and their prey hide

At a glance

Fast moverPredatorMoisture indicatorMostly harmless