Combat

Insect Guide

Your Go-To Guide for Other Household Pests

Spiders, House

Common House Spider

Combat Insect Guide House Spider Map

Most Common Types

 

The American house spider is the most commonly seen species of cobweb spider found around most homes. These spiders build their webs near homes, often in isolated areas.  

 

What They Look Like

 

American house spiders are generally a dull brown color with different shading patterns on their legs. Their average body size is about 1/4 of an inch long, but they measure about an inch if you include the length of their legs. 

 

Where They Live

 

American house spiders prefer humid locations and may be easily discovered in crawl spaces or basements. They can be found all over the world, and can be found in over 40 states.

 

Where They Nest

 

American house spiders build their webs in or near homes, often in secluded areas. You can find these spiders in houses, garages, sheds, under porches, in window frames, and even under furniture and in closets. 

 

Steps to Prevent

 

Prevent spiders from entering your home by make sure all doors and windows are sealed tightly.  Fill all gaps, cracks and holes can be with caulk, foam, or cement. 

 

Are They Harmful?

 

Generally speaking, no, American house spiders are usually not aggressive to humans. For the most part, the only time they bite is out of self-defense as a reaction to being grabbed or squeezed.  Regular bites are dry and no more painful than a bee sting, but certain females can deliver sharp, venomous bites.