Silverfish are small, wingless insects known for their silvery-gray, scale-covered bodies that shimmer like metal. Their slender, teardrop shape and quick, wriggling movements resemble a fish, which is how they earned their name. Typically measuring between ½ to ¾ of an inch long, silverfish are nocturnal, remaining hidden during daylight hours and becoming active at night.
These pests thrive in damp, dark environments, gravitating toward bathrooms, kitchens, basements, and attics—especially places with high humidity. Leaky pipes, poor ventilation, and cluttered storage provide perfect hiding spots and breeding grounds for them.
Silverfish feed on starchy and sugary substances, including paper, book bindings, wallpaper paste, fabrics, and certain pantry items like flour and cereal. Over time, their feeding can cause noticeable damage to important documents, books, clothing, and even furniture upholstery. Though they don’t bite or pose a direct threat to humans, their presence often signals excess moisture in the home, which can lead to mold growth and attract other pests.
Preventing a silverfish infestation starts with reducing humidity. Using dehumidifiers, repairing leaks, and improving air circulation in damp spaces are crucial first steps. Sealing gaps in walls, floors, and baseboards helps limit their access, while storing paper, food, and clothing in airtight containers cuts off their food supply. Keeping your home clean, dry, and clutter-free is one of the most effective ways to make it less appealing to these persistent pests.
