How to Get Rid of Biting Spiders

Many types of spiders can bite, with some leaving small and slightly painful marks and others being dangerous to a person's health. In the U.S. the most dangerous spiders include black widows, brown recluse and hobo spiders. Other non-dangerous spiders such as wolf spiders, certain types of orb weavers and other normally harmless spiders can leave painful bites that will not cause much damage.

Things You'll Need

  • Vacuum
  • Broom
  • Residual insecticide
  • Power washer
  • Caulk
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Instructions

    • 1

      Vacuum or brush away all spiders and signs of spiders inside your home and on the outside of your home. Vacuum living spiders you see, as well as spider webs, nests and egg sacs. Spider webs and other spider materials in hard-to-reach places can be brushed down with a broom. Sticky traps or glue traps, which can be found online or at any good hardware store, can be placed in hard-to-reach corners and places where spiders are commonly seen. Power wash outdoor nests and egg sacs in places where you cannot reach.

    • 2

      Spray residual insecticides to eliminate biting spiders and keep them from coming back. Residual insecticides with active ingredients such as bifenthrin, cyfluthrin, permethrin and tetramethrin will work the best on spiders. Spray residual insecticides into corners and areas where spiders, nests and egg sacs have been located in the past. These residual insecticides will work for varying amounts of time depending on the brand used, so follow instructions to know when to reapply.

    • 3

      Fix up areas of the home that allow spiders to get inside. Most spider bites occur when a spider gets trapped against the skin. This could occur because they get stuck in clothing, they get stepped on or they are handled improperly when being moved. To keep accidental contact from happening, keep biting spiders from entering a home. Fix broken screens and make sure they are securely fitted. Caulk cracks and crevices in the foundation or in other places to eliminate entrance points. Make sure doors securely fit, including crawl space doors and any outdoor entrances to basements or garages.

    • 4

      Change the environment in the home and surrounding the house to keep biting spiders away. Even if you eliminate the spiders inside your home, if you do not change the environment they will come back. Spiders like the brown recluse will live in old boxes, old shoes and any debris piles that are dark and isolated. Many spiders will live in high weeds surrounding houses, as well as in firewood piles, under rocks, in cracks in the foundation and even in garbage piles. Keeping a home clear of debris will keep spiders from coming back. Keeping a home free of garbage will keep insects from being around and will eliminate a spider's food source.