What Spray Product to Get Rid of Spiders?

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There are around 3,000 different spider species in North America. But how to get rid of them? What spray product to get rid of spiders? The vast majority of these arachnids are harmless, more of a bother than a cause for concern.

However, a few species, including brown recluse and black widow spiders, can inflict significant injury (though bites are rarely fatal). A DIY pest management program may be all that is required to instill fear or annoyance, deal with an infestation, or keep harmful local species at bay.

The most effective spider killer comprises powerful chemical or natural components. These formulations kill or repel spiders and work for days, weeks, or months after application.

Continue reading about insecticide spray, dust, spider traps, and natural insect repellents. Choose the most appropriate product from these effective pest control options using the following buying factors.

What Spray Product to Get Rid of Spiders?

what spray product to get rid of spiders

Some people are terrified of spiders. These eight-legged terrors are beneficial predators that naturally reduce harmful insects infesting your yard. Despite their advantages, you may dislike spiders and desire to utilize sprays to get rid of them in your yard.

Spiders and chemicals

Chemical control is problematic since it kills other predatory insects that eat the same bugs that spiders do. This leads to an increase in the number of insects that predators were previously utilized to control. Some commercial products are intended to keep spiders out of your house.

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These treatments are known as barrier sprays, and when used around the foundation of your home, they keep spiders from crossing the chemical residue.

The Integrated Pest Management Program at the University of California states that controlling spiders using pesticides is challenging since the chemical must contact the spider, and chemical residue does not have a long-term effect.

Chemical Control

If you must use chemicals to manage spiders outside, Michigan State University Extension recommends using insecticides that contain diazinon. Other active components in pesticides that can kill spiders both inside and out include pyrethrin, allethrin, and resmethrin.


To kill a spider, these products are typically sprayed directly on it. As a last option, the University of Minnesota Extension recommends spraying a broad-spectrum insecticide outside buildings, including cracks, crevices, and beneath the siding.

Cultural control

Remove any materials that spiders could use to make a web in your yard to help drive them away. Some spiders will build homes on dense plants, garbage, or leaf litter. You can deter them from staying by eliminating these objects and keeping plant growth near the house neat and manicured.

Outdoor lighting should be kept away from doorways and windows because it attracts the tasty insects that spiders feed on. Alternately, replace white light bulbs with yellow lights meant to repel insects.

Regularly removing spiderwebs from exterior structures, such as garages and home siding, will encourage spiders to depart the region.

Insecticide Dust Made From Natural Ingredients

Diatomaceous earth is a natural spider repellent used indoors and out. This compound comprises dust (powder) made up of fossilized aquatic creatures. Through soaking up oils and fats from the exoskeleton, diatomaceous earth causes insects to dry up and die.

Spiders and other insects, such as bed bugs, cockroaches, fleas, and ants, are all killed by this nontoxic treatment. Within 48 hours, the natural dust begins to act, and because the compound does not degrade, it remains powerful as long as it’s kept dry.

Apply a thin layer of diatomaceous earth around plants, on the lawn, or anywhere else where spiders are a problem. While this product is generally regarded as safe, it might irritate the skin and eyes if misused.

Spider Repellent Sprays

spider repellent sprays


  • Spiders are repelled by natural pest control concentrates and sprays that do not contain chemicals or other possibly dangerous substances. These products are safer for indoor use, especially in homes with young children or curious dogs. 
  • Natural repellents use plants and substances repulsive to spiders’ senses; the same goods have a pleasant or neutral odor to humans. Peppermint essential oil-based formulas are popular since they leave the home smelling fresh. Vinegar-based products are also effective, and many of them may be used as household cleaners.
  • Natural spider repellents are typically applied by spraying bug hiding spots such as cracks and crawl areas. Natural repellents do not kill spiders, and their effects persist for days rather than weeks or months as chemical-based treatments do.


Aerosol sprays
  • Spray containers for spider extermination include aerosol cans, liquid spray bottles, and gigantic jugs that link to garden hose nozzles. Chemical sprays contain synthetic ingredients, which are also found in dust insecticides. Some are available as concentrations that must be diluted and applied with a spray bottle.
  • Chemical spider spray destroys the central nervous system of insects, killing them instantly. Sprays for the home’s exterior can be used to build a barrier to keep bugs out or as spot treatments when you encounter a crawling bug or two.
  • Aerosol sprays make it quick and straightforward to cover a large amount of ground. Keeping a 12-inch gap between the spray nozzle and the treated area is critical while spraying. The disadvantage is that they are among the more expensive treatments, and you may require several cans to spray extensive areas, such as your home’s foundation. It is also worth noting that oil-based aerosols contain many chemicals and can leave a greasy residue.
  • Spray bottles are often portable and reusable. If you use the entire contents, you can reuse the bottle by filling it with a water-soluble insecticide. The sole disadvantage of spray bottles when spraying large areas is that they can induce hand or arm fatigue.


Our top options can successfully remove numerous indoor and outdoor pests after carefully reviewing the main characteristics that should be included in the best spider killers, such as adaptability, kind, quantity, and effectiveness.

The above methods provide immediate and long-lasting results while also killing other common insects such as cockroaches, fleas, crickets, and scorpions for complete pest eradication. Furthermore, some of these solutions are nontoxic or humane, resulting in fewer toxins in your house or outdoor settings to protect dogs and children.

Finally, several of the spider killers listed above are available in bulk quantities or two-packs for long-term use in the case of re-infestation. However, many of our recommendations are chemical-based treatments, and safety precautions should always be used.

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.