House centipedes in Ontario homes are alarming long, fast, and appearing suddenly from walls and drains. XtermaPro Pest Control eliminates centipedes and the conditions that attract them.
The house centipede (Scutigera coleoptrata) is the most common centipede found indoors in Ontario yellowish-grey with up to 15 pairs of long, striped legs and capable of running surprisingly fast. They prefer moist, dark environments and are predators of other insects, which means their presence often indicates a broader pest issue in the same space.
Signs of centipede activity:
House centipedes can technically bite if handled, but their jaws rarely penetrate human skin and the bite is minor. The bigger concern is what their presence signals centipedes in numbers typically indicate a moisture problem and a broader insect infestation that requires investigation.
We treat centipedes through targeted residual application in basement perimeters, floor drains, and other harborage areas combined with recommendations to reduce moisture. Since centipedes are predators, reducing the underlying insect population (their food source) is essential to long-term control.
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Not really. House centipedes can bite if handled but their bite is milder than a bee sting and usually does not break human skin. They are actually beneficial because they prey on cockroaches, silverfish, and spiders, so a few centipedes often means less of everything else.
Seeing centipedes frequently is a signal that other prey insects are abundant, which means the home has an underlying pest load. Treatment addresses both the centipedes and the prey so the cycle breaks, not just the visible bug.
They enter through cracks in the foundation, around basement windows, and up through floor drains. Damp environments like laundry rooms, basements, crawlspaces, and bathrooms are prime hiding spots because centipedes dry out fast in low humidity.
We apply a residual along the foundation perimeter and in basement cracks, dust into wall voids, and address the prey insect load at the same time. A dehumidifier in the basement is strongly recommended because centipedes cannot survive below 60 percent humidity.
You will see a noticeable drop in activity within 7 to 10 days and full clearance within 21 to 30 days. A follow up visit is included to verify the underlying insect population is also down.
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