Silverfish (also called Lepisma saccharina) are surprisingly common household pests, especially in kitchens and bathrooms. You’ve likely encountered them when they suddenly scatter across the floor or bathtub edge after switching on the light. But what draws them in, and how can you effectively get rid of them? Our article reveals everything!
Why Do These “Gray Bugs” Appear?
Silverfish are tiny, flat, wingless insects that love damp, dark, and quiet spots like bathrooms, kitchen shelves, or low-traffic corners. An entomologist calls them “ancient survivors” — they’ve been around for about 300 million years, even before cockroaches. Still, it’s totally understandable if you don’t want them living in your bathroom. While harmless to people, they can damage many items by nibbling on paper, cardboard, clothes, carpets, and books.
How to Get Rid of Them?
Remove Their Main Attraction – Reduce Humidity!
Moisture is key to silverfish comfort. Cutting down humidity — for example, using a dehumidifier — can make a big difference. Make sure your bathroom has working ventilation, and avoid leaving water under sinks or in the shower area.
Cut Off Their Food Supply
Silverfish love cellulose and starch (paper, cardboard, grains, clothes). Store grains, flour, and other dry foods in airtight containers. Don’t leave old newspapers out in the open—keep them in sealed boxes instead.
Use Diatomaceous Earth!
This natural powder dehydrates bugs effectively while being safe for people and pets if used dry. Sprinkle it into cracks, under cabinets, behind counters, or visible bathroom spots—but only after you’ve lowered humidity.
Seal Entry Points
Close off all cracks and gaps around vents, pipe joints, baseboards, and door frames—these can all be entryways for silverfish.
Set Up Traps
You can make your own traps: use sticky traps from hardware stores or place damp newspapers to attract silverfish, then toss the paper with the bugs inside.
Natural Repellents – Essential Oils, Salt, Silica Gel
Cedar, peppermint, lavender, cinnamon, or tea tree oil sprays smell great to us but repel silverfish. Sprinkling salt on windowsills or hidden spots is a simple, cheap way to dry out and deter them. Silica gel packets also help reduce humidity—just keep them away from food and children.
If Things Don’t Improve – Call a Pro
If the problem is severe and home methods don’t work, it’s worth getting help from a pest control professional.
Those tiny “silver bugs” appearing in your bathroom and kitchen aren’t just annoying—they can cause real damage to your belongings over time. The best defense is combining methods: reduce humidity, cut off food sources, and use natural repellents. If needed, a specialist can help identify and solve the problem so you can finally say goodbye to these silvery little critters.
