Pest spiders are various spider species that can invade homes, causing concern due to their appearance and potential for bites. Common pest spiders found in homes include the house spider, brown recluse, and black widow. House spiders are often harmless and live in corners and crevices, spinning webs to catch insects. Brown recluse spiders, identifiable by a violin-shaped mark on their abdomen, are known for their venomous bite, which can cause skin necrosis. Black widow spiders are recognized by their glossy black bodies and red hourglass-shaped mark, and their bites can be dangerous, causing severe pain and systemic symptoms.

Effective spider control involves a combination of cleanliness, exclusion, and targeted treatments. Regularly vacuuming and removing spider webs can reduce spider populations and their egg sacs. Sealing cracks and gaps around windows, doors, and foundations helps prevent spiders from entering the home. Reducing clutter and minimizing outdoor lighting that attracts insects, which are spider prey, can also be beneficial. For significant infestations or venomous spider concerns, professional pest control services can provide comprehensive treatments, including insecticides and habitat modifications to manage and eliminate spider populations effectively.