Does Bleach Kill Spiders? How Effective Is It?

Jennifer Jones

Written By, Jennifer Jones

Updated on 21 Sept., 2026

Does Bleach Keep Spiders Away
AI Generated Image: Intrigue House

Table of Content

    Spiders are stealthy bugs that can appear on anything from clothes to dishes and even the bathtub. They enter your house in search of warmth, food, and water. These eight-legged creatures build webs to prey on small insects, including mosquitoes, moths, and ants. However, spiders are also omnivorous and can even feed on fungal spores and pollen grains. You may notice more sightings of these monstrous creatures as temperatures drop in the fall. If you don't want them in your living space, you can get rid of them with several methods, including bleach.

    Can a Clean House Still Have Spiders?

    Clean houses usually have fewer bugs and pests because they lack potential food sources. Some kinds of spiders usually live in residential houses. So, even if you cannot see them, these eight-legged bugs can still exist despite a clutter-free home. Of course, with cleanliness, you can always keep their population in control. You can try out different methods, including bleach, to keep spiders away from your house.

    Does Vacuuming Kill Spiders and Other Bugs?

    Vacuuming is considered one of the best ways to get rid of pests and bugs from carpets, upholstery, and hardwood flooring. The powerful vacuum suction damages the spider’s fragile exoskeleton, ultimately killing it. Even if some spiders survive, they will suffocate when exposed to high dirt density. Use a proper disposable bag to collect vacuumed debris so spiders don't have a chance to escape. Get rid of the dirt by cleaning the bag away from your house.

    Does Bleach Keep Spiders Away?

    Bleach can kill existing spiders in your house. Spraying a bleach-and-water mixture on spiders can kill them and destroy their webs. However, killing only the spiders you can see won't address the root cause. Bleach is also hazardous, so use it with extreme care, especially if you have kids and pets at home. Spraying bleach near house openings or in the garden can be extremely dangerous if you have kids at home. You must know how to use bleach properly to get rid of these creepy crawlers. However, the best way is to hire a professional to get rid of spiders.

    How to Use Bleach to Keep Spiders Away?

    A Gloved Human Hand Firmly Grips a Pristine White Plastic Spray Bottle and Spraying It on Spider
    AI Generated Image: Intrigue House

    Bleach is an effective spider-control method because it is considered a pesticide and fungicide that kills spiders' bacterial cells. You just need to know how to use it properly.

    Step 1:

    Make a mixture by mixing one part bleach with three parts water, and pour it into a spray bottle.

    Step 2:

    Spray this mixture on the spiders or their webs from a distance of 6 to 10 inches.

    Step 3:

    Remove the dead spider and web. Also, clean up the bleach from the surface immediately.

    Step 4:

    You can spray the mixture once a week in spider-dominated areas of your house.

    Caution to Follow

    While using bleach to kill spiders, keep in mind that it is hazardous, so follow the tips.

    • Be extremely careful while spraying the bleach.

    • Bleach spray can stain the surface, so you must clean the area immediately after removing the spider.

    • Keep the spray bottle away from children and pets.

    What Are the Other Potential Ways to Keep Spiders Away?

    While bleach can be an effective way to kill spiders, you can also try tricks to keep these bugs away from your house.

    Remove Food Sources

    Spiders get attracted to food sources. So, you can start by removing food sources such as dropped fruits in your yard or on the floor. Sweep your house frequently to keep away pests and bugs. Store food items in airtight containers and dispose of waste items in proper trash cans.

    Prevent Moisture

    Repair leaking pipes and clear gutters of organic debris like leaves or wood. Make sure your house does not have any standing water where pests can breed.

    Seal Entry Points

    Inspect the exterior wall regularly for any cracks or other entry points that can let pests enter your house. Use options like weather stripping, door sweeps, or window screens in such cases. Also, try to keep your outdoor lights off at night.

    Frequent Cleaning

    Perform vacuuming to clear out spider webs regularly. Spiders often feed on other small pests like flies and mosquitoes. If you have a clean surrounding, it will lead to fewer pests, resulting in a low population of spiders too.

    Cedar as Repellent

    Several Meticulously Crafted, Unbleached Natural Linen Fabric Sachets, Filled With Aromatic Cedar Wood Shavings and Neatly Tied With Rustic Twine
    AI Generated Image: Intrigue House

    You can place cedar in drawers, mulch, or closets as a repellent to drive away pests like spiders.

    Use of Essential Oils

    Prepare a spray with water and alcohol, adding eucalyptus or essential oils like lavender oil. Spray this mixture frequently near the windows and other areas to keep spiders away.

    Get a Pet

    Pets, especially cats, help drive away pests like spiders, even though they might not be able to clear up the entire infestation.

    Let Ladybugs Rule Your Garden

    Ladybugs are a great option for getting rid of spiders because they feed on the same pests as spiders do. Therefore, both compete for food sources, but ladybugs are more efficient in catching their prey. Resultantly, spiders start looking for another place, leaving your house.

    Conclusion

    Whether arachnophobic or not, most homeowners will not wish to see spiders crawling around their house. While there are so many options to keep them away, one of the best ways is to use bleach directly to get rid of them. However, as bleach is hazardous, you must ensure that you use the bleach remedy very carefully so that it does not harm anyone in the house.

    FAQs

    Can Bleach Kill Spiders Instantly?

    Yes, spraying a mixture of water and bleach directly on the spiders can kill them instantly.

    Can Bleach Destroy Spider Webs?

    Yes, a bleach solution can also destroy spider webs.

    Can You Use Bleach as a Repellent?

    No, although a bleach solution is a great option to kill spiders, you should not use it as a repellent due to its hazardous nature.
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