Silverfish are small, wingless insects that have existed for millions of years. They are about 1½ inches long, silvery in color, with long antennae and a wiggly, snake-like movement. Though they do not bite or carry diseases, their presence is a sign of high humidity and accessible food sources in your home. Bathrooms, basements, kitchens, and laundry rooms are their favorite spots.
They are attracted to starchy and sugary materials, including paper, cardboard, fabric, and even crumbs. If left unchecked, silverfish can damage books, wallpaper, clothing, and pantry items. Signs of a silverfish problem go beyond just spotting one on your floor. Look for yellow stains or tiny holes in paper and fabric, shed skin, small black droppings, or damage along wallpaper seams. These indicators show that silverfish have been active, often in dark, damp areas where they feel safest.
Early identification is key to preventing a larger infestation, as silverfish breed quickly and can become difficult to control if ignored. To eliminate silverfish, start by drying the environment. Use dehumidifiers and improve ventilation, especially in damp rooms. Remove food sources by storing pantry items in airtight containers and clearing out old paper, cardboard, or books. Seal cracks and crevices where they may hide, and consider natural repellents like diatomaceous earth, boric acid, or scents such as lavender and cedarwood.
Traps can also help reduce numbers. Prevention is just as important as removal. Keep your home dry, clean, and clutter-free. Store clothing, paper, and food properly, and maintain consistent airflow in humid areas. By addressing moisture and food sources, you can keep silverfish from returning and enjoy a home free from these persistent insects.
