Pests: Spiders

If you have any questions about any pest and it is not covered here, please give us a call or send us an email. We would love to answer any question you have.


Where They Live

attics, wood piles, weeds, clutter in & around the house

About the Pest:

Spiders invoke a wide range of emotions among people. From fear to fascination to wonder and admiration, spiders have been part of human lore for thousands of years. They are seen as signs of evil and also of good luck. There are not many other creatures in the world that create such a wide range of emotions and feelings.

Spiders feed on living prey. They provide a great benefit to the world by reducing insect populations. Most spiders catch their prey in silk webs, but a few actively hunt. All spiders can produce silk and most spiders have as many as 7 different kinds of silk used for different reasons.

Spiders pose certain health risks to humans. They invoke fear, create allergic reactions, and envenomation. Fear of spiders is called arachnophobia. Some people simply dislike or strongly dislike spiders, but some people have an intense fear of spiders and will alter their lifestyle to not come into contact with them. Even monkeys have been shown to fear spiders. Inhalation of spider hairs and scales can cause allergic reactions in people similarly to those found with cockroach allergies. Lastly, spiders are predators and use venom to incapacitate their prey. Spiders rarely bite unprovoked but will bite when trapped against skin of they feel threatened. Around 10,000 spider bites get reported to poison control centers every year, and most spider bites go unreported.

How to Control:

A variety of control methods should be used when wanting to control spiders in and around structures.

Remove webs and clutter – Removal of spider webs, egg sacs, and potential harborages is critical to long-term success. Sweep away webs and egg sacs, but be careful not to get too close to any live spiders. Removal of wood piles, weeds, clutter in and around the house is very important. Spiders like to hide in these areas, and if you can remove hiding spots, you can eliminate an environment conducive for spiders.

Exclusion – One of the best ways to keep down spider populations inside a home is to seal up as many possible spider entry points as possible. This includes cracks in the exterior of the home, properly installed window screens in good condition, and well-sealed doors, especially those tightly sealed at the bottom.

Exterior Lighting – Lighting on the outside of buildings attracts insects, which in turn attracts spiders. Changing exterior lighting to yellow bulbs, which are less attractive to insects, can really help.

Ventilation – Proper ventilation in crawlspaces and attics reduces excess moisture, which then removes a water source for insects and spiders. To help avoid moisture, vents should be open when temperatures are above 45 degrees and closed when below 45 degrees. Ask us about our auto-closing crawlspace vent applications. You will never have to think about opening or closing your vents again.

Perimeter Treatments – Applying residual insecticides around the outside of a home is very effective in keeping spiders out of a building, especially the hunting spiders that are often invading homes.

Crawl Space and Attic Treatments – Crawlspaces and attics can often be havens for spiders and other insects, especially when there is moisture present. Long lasting residual dusts are very effective in keeping spiders and insects out.