Silverfish thrive in moist, humid environments, says James Norton of Fantastic Pest Control in London. Take away their favorite conditions by using a dehumidifier in damp basements and making sure the bathroom is well ventilated. “Keep in mind that a dehumidifier won’t cure the underlying source of the humidity,” says Dan DiClerico, the Good Housekeeping Institute’s Home Improvement and Outdoor Director. You might also need to keep moisture out by fixing leaking pipes, sealing up any exterior cracks with caulk and making sure your home’s gutters and downspouts are channeling water away from foundation walls.
3. Clear Clutter
Silverfish also love hiding in — and feasting upon — old papers, magazines and books, so if you tend to save every piece of paper that crosses your desk, you might need to do some clearing out. Get rid of the stuff you haven’t looked at in forever, and store items you can’t bear to part with in airtight bins, especially if the papers are kept in the basement or attic.
4. Sprinkle Diatomaceous Earth
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