Spider Control & Extermination
Most spiders found in US homes are harmless and actually beneficial — they eat other insects. The problem is that two species, the brown recluse and the black widow, are venomous enough to send people to the emergency room. Both are found across large portions of the country, and most homeowners can't reliably tell them apart from harmless lookalikes.
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Signs you have a spiders problem
- Webs in corners, basements, garages, sheds, attics and crawl spaces
- Funnel-shaped webs in low corners and ground cover (grass spiders)
- Irregular tangled webs in undisturbed corners (black widow, common house spider)
- Solitary spiders found in clothing, shoes, behind furniture or in basement storage (brown recluse)
- Egg sacs — cream or tan, papery — attached to webs or wall corners
- Increased spider activity in late summer and fall as males search for mates
Why spiders are a serious problem
- Black widow bites are neurotoxic — cause severe muscle pain, cramping, and in rare cases respiratory difficulty
- Brown recluse bites can cause necrotic lesions that take months to heal and may require surgical debridement
- Allergic reactions and secondary infection from bites of even harmless species
- Heavy webbing can damage outdoor paint and siding over time
Why DIY spiders treatment usually fails
Spider sprays work — but only on contact, and most household spiders spend their time hidden in cracks and high corners. Vacuuming webs is helpful but doesn't address the population. Brown recluse infestations in particular are notoriously difficult to clear DIY because the population is dispersed across attic, basement and wall voids, and direct visual inspection misses most of them. Sticky monitors and targeted residual treatment together work — but require knowing where to place them.
The reality: Most homeowners who try DIY end up calling a pro anyway, after spending $50–$200 on hardware-store products and several weeks of failed attempts. The math almost always favors calling a licensed contractor up front.
What a professional spiders treatment looks like
Licensed spider control operators identify the species, locate harborage areas, and apply targeted residual treatment to wall voids, cracks and crevices where spiders rest. For brown recluse infestations, monitors are placed strategically to track population reduction over time. Treatment is paired with web removal and exclusion recommendations.
What it costs
Pricing varies by infestation severity, property size, and location, but most homeowners can expect quotes in the range described in the FAQ below. The contractor will give you an exact, no-obligation quote during the initial call.
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Frequently Asked Questions
How do I know if I have brown recluse or black widow spiders?
Brown recluse are tan/brown with a violin-shaped marking on the back and only 6 eyes (most spiders have 8). Black widows are glossy black with a red hourglass marking on the underside of the abdomen. If you're unsure, a licensed operator can ID from photos or a sample.
Are spider bites really dangerous?
Most US spider bites are harmless. Brown recluse and black widow bites are the exception — both should be treated as urgent medical issues, especially in children and the elderly. Other species occasionally cause secondary infections from scratching but are not medically significant.
How much does spider treatment cost?
Standard residential spider treatments run $150–$300. Brown recluse infestations are typically more — $300–$600 — because they require multiple visits and monitor placement.
Why do I have more spiders in the fall?
Late summer and fall are peak mating season for many spider species, and males that normally stay outdoors come inside searching for mates. Cooler nights also push outdoor spiders into garages, basements and crawl spaces.
Can I just kill spiders myself when I see them?
For the occasional harmless house spider, yes — that's fine. For known venomous species (brown recluse, black widow), or when you're seeing them regularly, an inspection-based treatment plan is the safer approach.