Pest Control
Do Mothballs Keep Silverfish Away? We Asked Pest Experts for the Truth

Do Mothballs Silverfish? We Asked Pest Experts for the Truth
If you’re wondering whether mothballs can repel silverfish, you’re not alone. Many people believe that mothballs silverfish can be a quick fix for these pests, but pest experts have a different view. While mothballs may have some repelling effect, the risks involved make them less ideal for controlling silverfish.
Why Mothballs Aren’t Ideal for Silverfish
Mothballs contain naphthalene and paradichlorobenzene, chemicals that produce a strong odor to repel pests. Although these chemicals may work against silverfish, they are toxic to humans and pets. The strong fumes can also transfer to your clothes, leaving an unpleasant odor that’s hard to remove.
Experts like Ed Dolshun, VP of business development at Catchmaster, caution against using mothballs in open spaces. While effective, mothballs pose serious health risks, especially in homes with children or pets. They’re best used for moths in enclosed spaces, not for silverfish control.
Safe Alternatives to Mothballs for Silverfish
- Lower Humidity in Your Home
One of the most effective ways to keep silverfish away is by reducing humidity. Silverfish thrive in damp environments. Using a dehumidifier or improving ventilation can make your home less hospitable to these pests. - Seal Cracks and Crevices
Silverfish can enter your home through cracks and crevices around pipes, windows, and baseboards. Sealing these gaps with caulk can prevent silverfish from finding their way inside. - Use Diatomaceous Earth
Diatomaceous Earth (DE) is a natural, non-toxic substance that works as a dehydrator for silverfish. When you see silverfish, sprinkle DE around the infested areas to dry them out effectively. - Keep Areas Clean and Clutter-Free
Silverfish hide in cluttered areas like shelves and closets. Regular vacuuming and removing open food sources can discourage them from taking up residence.
Preventing Silverfish Outdoors
- Maintain a Clean Yard
Removing leaf litter and debris from around your home can reduce silverfish entry points. Keeping your outdoor area clean minimizes the chances of an infestation inside. - Seal Outdoor Cracks
Just as you seal indoor gaps, you should seal cracks in your foundation and around windows to stop silverfish from entering your home. - Move Woodpiles and Mulch
Silverfish thrive in moist, organic environments. By relocating woodpiles and mulch away from your foundation, you reduce potential breeding grounds for the pests.
Conclusion
Mothballs silverfish might seem like an easy solution, but the risks they carry outweigh the benefits. Instead, focus on safer and more effective methods like reducing humidity, sealing cracks, and using non-toxic deterrents.
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