How to Identify
– Cobwebs in corners, windows, and undisturbed storage areas.
– Visible long-legged or compact-bodied spiders in basements, attics, or under eaves.
– Egg sacs tucked in hidden or sheltered locations like garages and sheds.
– Bites presenting as localized redness and pain (seek medical care if symptoms are severe).
Habitat
Corners, basements, garages, window frames, and undisturbed storage areas; most species build webs near light sources that attract flying insect prey.
Health Risks
Most US house spiders are harmless to humans; medically significant species include the black widow (Latrodectus spp.) with neurotoxic venom and the brown recluse (Loxosceles reclusa) with necrotic venom; bites from these species require prompt medical attention.
Most local house spiders are harmless, but Asheville residents should be aware of occasional black widow or brown recluse encounters which require prompt medical attention if bitten.
Treatment
Reduce prey insect populations (spiders follow food); residual perimeter and interior spray to contact and deter; web removal to discourage harborage; sticky traps for monitoring.
Control focuses on reducing prey insects, web removal, targeted residual treatments near entry points and dark harborage areas, and sticky traps for monitoring in basements and garages.
Prevention Tips
– Seal cracks, gaps, and utility penetrations to block entry from outside.
– Reduce clutter in basements, garages, and storage areas where spiders hide.
– Shake out shoes, gloves, and clothing stored in low-traffic areas before wearing.
– Install yellow or sodium vapor exterior lighting to reduce flying insect attraction.
– Wear gloves when working in woodpiles, sheds, or other undisturbed spaces.
– Seal exterior cracks and gaps and install door sweeps to reduce indoor entry.
– Reduce clutter and storage at floor level in basements and garages to limit hiding spots.
– Remove outdoor woodpiles or store them away from the house to decrease spider habitat.
– Use exterior lighting that is less attractive to flying insects (yellow bulbs) around porches and Grove Arcade storefronts.
– Wear gloves when moving stored items or working in sheds and woodpiles.