Common House Spiders

How to identify common house spiders

This group covers several familiar types: wolf spiders are large, fast, ground-hunting spiders that don't build a catching web; jumping spiders are small, compact, and active by day with excellent vision; orb-weavers spin the classic round wheel-shaped webs across eaves, doorways, and gardens; and true house spiders build messy cobwebs in corners, garages, and basements. None has the brown recluse's violin mark or the black widow's red hourglass — the absence of those features helps separate harmless house spiders from the two medically significant Texas species.

Behavior & biology

These spiders are predators that go where the insects are, which is why they cluster around exterior lights, eaves, garages, and damp corners where prey gathers. Web-builders like orb-weavers and house spiders set up where flying and crawling insects travel; hunters like wolf and jumping spiders roam in search of prey. They lay eggs in silk sacs tucked into webbing or sheltered spots, and populations rise and fall with the available insect food and the seasons rather than exploding the way insects do.

Why common house spiders matter

Common house spiders cause no structural damage and are, on balance, beneficial — they prey on flies, mosquitoes, roaches, and other insects. Bites are uncommon and, for these non-venomous species, typically minor. The practical issues are aesthetic and psychological: unsightly webbing across eaves, porches, and corners, egg sacs in webs, and the simple fact that many people are unsettled by spiders, especially the large, fast wolf spiders that wander indoors.

DIY vs. professional control

Knocking down a web or treating a single spider does little when the underlying insect food source keeps drawing more in. Professional control is broader: removing webbing and egg sacs, applying a barrier treatment around the eaves, doors, and foundation where spiders set up, reducing harborage like clutter and debris, and — most importantly — controlling the insects the spiders are feeding on, since cutting their food supply is what actually lowers spider numbers.

How Definity treats common house spiders

Definity controls common house spiders by de-webbing eaves, corners, and entries, applying a barrier treatment around the structure, reducing harborage like clutter and debris, and treating the insect prey that draws spiders in the first place. Johnny Lockridge's point is that spiders follow their food — knock down the webs and treat the perimeter, but reduce the insects they're eating and the spiders lose their reason to stay.