house spider in web

House Spiders

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What do house spiders look like?

Depending on the species, house spiders are usually yellow or brown with gray abdomens marked with white, and legs that are brown and darkly banded. Male house spiders are smaller than females, measuring approximately 1/8 of an inch long. Female house spiders are slightly larger than ¼ of an inch. 

house spider inside home

Pest Facts

Did you know?

  • House spiders are most frequently found in human dwelling places.
  • Prevalent house spiders include the common house spider, brown house spider, aggressive house spider, and domestic house spider.
  • The practice of ballooning allows spiders to populate habitats far from their origin. 

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When are house spiders most active?

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Biology of house spiders

Female common house spiders deposit as many as 250 eggs into a sac of silk. These sacs are often brown in color and are flask-like in shape. Females produce up to 17 of these sacs during a lifetime, resulting in more than 4,000 eggs. Within a week, spiderlings hatch and begin to undergo a series of instars.

The first instar takes place inside the egg sac. Spiderlings in the first instar do not nourish themselves while those in the second instar consume premature eggs.

After hatching, air currents disperse surviving spiderlings on threads of silk. This process, known as ballooning, allows spiders to populate habitats far from their origin. Adult spiders may survive for more than a year.

House spider webs

  • House spider webs are typically funnel-shaped and constructed from thin silk threads
  • House spider webs are often established in various places within a home, including windows, ceiling corners, and above or beneath fixtures.
  • Spider webs serve both as dwelling places and as traps for prey. 

What do house spiders eat?

House spiders eat insects. The prey they catch in their webs are paralyzed by venom injection and then broken down by digestive juices. As a result, house spider prey is liquefied to allow for consumption.

Are house spiders dangerous?

It should be noted that house spiders can bite but it’s usually in situations where they perceive a threat. Their bites are not typically medically threatening. 

How do I get house spiders?

If you’ve found house spiders in your home, there was a way in and there’s a food source.

How do I get rid of house spiders?

At Greenway Pest Solutions, our local pest control pros specialize in spider control and have the tools, knowledge, and experience necessary to eliminate spiders and the insects that attract them. 

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