Silverfish Control: Reduce Humidity and Target Hiding Places

Silverfish thrive in high humidity. First, fix moisture issues: cover crawl spaces, use bathroom and kitchen fans. They damage paper, book glue, and cellulose lint. Sticky traps (for roaches/fleas) catch them. Sprays with boric acid, pyrethrin, or permethrin applied thoroughly to cracks, crevices, pipe penetrations, closets, and attics can eliminate them in 10–14 days as they emerge from wall voids.