About House Spiders
What Are House Spiders?
House spiders are a broad group of species that turn up in and around Florida homes, most of them harmless and even helpful, since they feed on other insects. Common species include the American house spider, wolf spiders, and cellar spiders, along with the occasional black widow in undisturbed outdoor spaces like garages and woodpiles. Most sightings are more about nuisance and unease than any real danger.
Identification
Most common house spiders are tan to brown, with a rounded abdomen and thin legs, and build irregular webs in corners, window sills, and undisturbed areas. Wolf spiders are larger, hairy, and don't build webs, instead hunting prey directly. Knowing which type you're seeing matters more than it might seem, since it changes how much attention the situation actually needs.
Common House Spider or Black Widow?
Nearly all spiders found indoors are harmless, but it's worth knowing the one that isn't. Black widows have a distinct, shiny black body with a red or orange hourglass marking on the underside, and tend to stay in undisturbed outdoor spots rather than living in the house itself.
Tan or brown, rounded abdomen, builds messy webs in corners and window sills
Shiny black, red or orange hourglass marking, found in garages, woodpiles, and undisturbed outdoor areas
Signs of Activity
Spider activity often points to something else going on, since more spiders usually means more of the insects they feed on.
Habitat and Behavior
House spiders prefer dark, undisturbed spaces: garages, basements, closets, attics, and the space behind or under furniture. Outdoors, they favor eaves, woodpiles, and dense vegetation. Florida's abundant insect population, active nearly year-round thanks to the climate, gives spiders a steady food source, which is part of why they're such a consistent presence around homes here.
Why Spider Activity Follows Other Pests
Spiders aren't usually the root problem, they're a sign of one. A sudden increase in webs or sightings often means another insect population, like ants, roaches, or flies, has grown nearby and is providing a steady food source.
Risks
The vast majority of house spiders in Florida are harmless to people, and bites are uncommon since most species avoid contact rather than seek it out. The exception is the black widow, whose bite is venomous and can cause serious pain, muscle cramping, and other symptoms that warrant medical attention. Black widows tend to stay outdoors in undisturbed areas like garages and woodpiles rather than inside living spaces, but it's worth knowing the difference before reaching into a dark corner.
Prevention Tips
When to Call a Professional
Occasional spiders are usually a DIY situation, but recurring activity, a suspected black widow sighting, or webs and egg sacs that keep coming back are worth a closer look. Since spider activity is often tied to a broader insect presence, treatment tends to work best when it addresses the food source, not just the spiders themselves.
Time to Call in Help If:
You've spotted a spider matching a black widow's markings, activity keeps returning after cleaning webs away, or spider sightings are climbing alongside other insect pests. A broader pest inspection often finds the actual source.
Spider Control Near You
Price Termite & Pest Control treats spider activity across Melbourne, West Palm Beach, and Fort Lauderdale.