How to Get Rid of Little Black Spiders

Black spiders are common to many homes.

There are dozens of species of little black spiders, many of which commonly take up residence in human homes. Fortunately, these common house and garden spiders are not dangerous to humans. The only venomous black spider that resides in the U.S. is the black widow, which is fairly large and has red markings. Small black house spiders are beneficial, because they keep away harmful pests. However, an overabundance of black spiders can be unnerving.

Things You'll Need

• Caulk
• Screens
• Eucalyptus leaves

Instructions

1. Seal off cracks in your walls using caulk, and place screens on windows and doors. Most spiders hate extreme temperatures and move inside to escape heat and cold. Blocking their points of entry will keep the spider infestation from getting worse.

2. Clean your house thoroughly by removing food crumbs and other items that attract ants and other bugs. Spiders are carnivores that feed primarily on insects. They won't take up residence in a place that has no food source, so eliminate items that attract insects and you'll also eliminate spiders.

3. Remove cardboard boxes from your home. Spiders are attracted to cardboard and some will actually eat it. Boxes also provide a hiding place for spiders that prefer dark enclosures. Prevent these spiders from finding a hiding place by removing debris outside of your house including piles of wood, leaves and garbage.

4. Sprinkle eucalyptus leaves in locations where you have seen spiders and in any areas you think they may be using as points of entry. Spiders are repelled by the scent and taste of these leaves, but the smell is pleasant to people.

Tips & Warnings

• Consult an exterminator if the problem does not improve after several weeks.

• Avoid poisoning the spiders. They will move around the house and spread the poison, endangering children and pets.

References

• "Biology: Life on Earth with Physiology, 9th Edition"; Gerald Audesirk, et al; 2010
• "National Wildlife Federation Field Guide to Insects and Spiders and Related Species of North America"; Arthur Evans, Craig Tufts; 2007
• "National Audubon Society Field Guide to North American Insects and Spiders"; National Audubon Society; 1980
• "Natural Pest Control"; Andrew Lopez; 2003