Common House Spider Egg Sac

Typically found in or around human dwellings, basements, sheds, and garages, often suspended in tangled cobwebs in dark corners or ceiling joints.

Egg sacs do not eat; however, once hatched, spiderlings eat very small insects. Adults consume common indoor pests like flies, gnats, and mosquitoes.

Females produce several pear-shaped, brownish-white or translucent egg sacs throughout the season. They hang them within a messy, haphazard web and guard them until hundreds of spiderlings emerge.

Low risk to humans as they are not aggressive and their venom is not considered medically significant. They provide ecological benefits by controlling indoor insect populations.