What Can You Spray in Your Yard to Get Rid of Spiders …

Recommended by Dikshit Aryal, Published on March 8th, 2018

Spiders are arachnids, not insects.

Spiders frighten some people. These eight-legged terrors are beneficial predators that are generally harmless and naturally control unwanted insects infesting your yard. Despite their benefits, you may consider spiders undesirable, and want to use sprays to get rid of them in your yard.

Chemical control is difficult and will also kill other predatory insects that feed on the same bugs as spiders. This can cause an increase in the insects that predators used to control. Some commercial products are designed to keep spiders from entering your home. These products are called barrier sprays and -- when applied around your homes foundation -- prevent spiders from crossing the residue left behind by the chemical. University of California's Integrated Pest Management Program notes that controlling spiders with pesticides is difficult because the chemical must come in contact with the spider and chemical residue doesnt provide a lasting effect.

Michigan State University Extension suggests that if you must use chemicals, use insecticides containing diazinon to control spiders outdoors. Pyrethrin, allethrin and resmethrin are a few other active ingredients in insecticides that can kill spiders both indoors and out. Tese products generally must be sprayed directly on the spider to kill it. University of Minnesota Extension suggests spraying a broad-spectrum insecticide on the exterior of buildings -- including in cracks, crevices and under siding -- as a last resort.

To help drive spiders out of your yard, remove any items where spiders could build a web. Some species of spiders will create a home on dense vegetation, debris or leaf litter. By removing these items and keeping plant growth near the home neat and trim, you will discourage them from staying. Move outdoor lighting away from doorways and windows because the lights attract the tasty insects spiders feed on. Alternatively, replace white light bulbs with yellow bulbs that are designed not to attract bugs. Regularly removing spiderwebs from exterior structures -- such as garage and house siding -- will help encourage spiders to leave the area.

Diatomaceous earth isnt a liquid spray but it can help control unwanted pests, such as spiders, crawling in your yard. This soft, sedimentary rock contains the fossilized remains of phytoplankton, an aquatic organism. DE is crushed into a fine dust and sold as a nontoxic or organic option for pest control. As the spider crawls over the DE, the dust absorbs lipids from the spiders exoskeleton, which results in dehydration and eventually death. DE isnt harmful to people or animals but can cause throat and nose irritation if you inhale the dust. It can be used both indoors and outdoors to control an array of pests including spiders, cockroaches and earwigs.

Amanda Flanigan began writing professionally in 2007. Flanigan has written for various publications, including WV Living and American Craft Council, and has published several eBooks on craft and garden-related subjects. Flanigan completed two writing courses at Pierpont Community and Technical College.

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What Can You Spray in Your Yard to Get Rid of Spiders ...

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