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How Silverfish Get Inside Your Home

Silverfish enter homes looking for a damp and humid hiding spot, and they often end up in bathrooms, basements, and attics. Anytime pests invade your space, it’s important to identify how they got in. If you know where silverfish are coming from, you can keep them from sneaking into your house. Check out a few ways silverfish can get inside your home. 

Cracks & Gaps

Foundation gap

Silverfish are tiny and can easily squeeze into small spaces. They can enter homes through cracks and gaps on the exterior of your house. Cracks in your home’s foundation or at ground level provide easy entry into your home. These pests can also slip inside through gaps where utility lines enter the house. To prevent silverfish, you should check your home for these openings and seal any you find.

Doors & Windows


Silverfish can walk into your home through your doors and windows. Cracks in door and window frames can allow them to head indoors. Damaged weather stripping or door sweeps can make it easier for them to enter too. If your door or window screens have any tears, silverfish can use them as an entry point. You’ll want to be on the lookout for problem areas and repair the holes you find.

Holes in the Roof


Though silverfish typically enter through holes close to the ground, they can also climb to higher spots on your home. Holes in your roof or gaps between shingles can allow them to sneak into your house. Wooden roofs are especially attractive to silverfish because they contain cellulose and often hold moisture. If these pests enter through the roof, they will likely stay in the attic. When you examine your home for entry points, don’t forget to check the roof.

Carried Inside on Items


Silverfish don’t always access homes through cracks or holes. These pests can be carried inside on infested items too. They are commonly found on firewood. Silverfish also hide in boxes containing paper items or fabric since they feed on these things. You may bring silverfish in with you when you carry in your groceries as well. These pests are known to infest pantry items. Before carrying anything inside, check to make sure there aren’t any hitchhikers.

If silverfish can find an opening, they will quickly make themselves at home in your space. Identifying and minimizing potential entry points will help to keep these pests out of your home. If you’re dealing with silverfish or other pests, we’re here to help! Check out our Maggie’s Farm Simply Effective™ Pest Control products for a more environmentally and family-friendly solution.

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