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House Centipedes

Identification, Habits, and Control
Closeup photo of a house centipede on white background

About House Centipedes

Species: Scutigera coleoptrata
House centipedes are one of the most common centipedes found indoors. Known for their long, delicate legs and fast, darting movement, they are frequently seen in bathrooms, basements, and other areas with higher humidity. While they may look alarming, house centipedes are active predators that feed on insects such as spiders, ants, and cockroaches. Their presence indoors often signals that other pest activity or moisture conditions are present.

How to Identify House Centipedes

Size

  • Approximately 1 to 1.5 inches long
  • Leg span can make them appear larger

Color

  • Yellowish-gray body
  • Dark stripes running along the body

Identifying Characteristics

  • Very long, thin legs (up to 15 pairs)
  • Fast, darting movement
  • Long antennae
  • Segmented body with banded appearance

Where You’ll Find Them

  • Bathrooms, kitchens, and laundry rooms
  • Basements and crawl spaces
  • Near drains, pipes, and moisture sources
  • Under sinks, behind appliances, and in dark corners

Behavior and Risks

House centipedes are nocturnal hunters that hide during the day in damp, dark areas and become active at night in search of prey. They rely on other insects for food, which is why they are often found in areas where pest activity already exists.

Homeowners commonly notice them suddenly darting across floors, walls, or ceilings—especially in bathrooms or basements. While they do not damage property or contaminate food, their fast movement and appearance can make them unsettling.

In most cases, repeated sightings are not just about the centipedes themselves, but an indication of underlying conditions such as excess moisture or the presence of other pests. In rare cases, they may deliver a mild bite if handled, but this is uncommon and not considered dangerous. Addressing moisture issues, sealing entry points, and reducing other pest activity are key steps in limiting house centipede presence indoors.