Silverfish (wingless, silvery, carrot‑shaped insects) are small pests commonly found in homes, especially in bathrooms, basements, laundry rooms or kitchens. They prefer dark, humid environments where moisture, carbohydrates and hiding places exist. They measure roughly up to 1½ inches in length (though shorter in many sources) and have long antennae and three tail‑like appendages. They don’t bite or fly, but their rapid, wriggling motion often startles homeowners.

Although not dangerous in the sense of biting or transmitting disease, silverfish can cause real damage to household items. Because they feed on materials containing starches or cellulose — such as paper, book bindings, wallpaper glue, fabrics, cardboard, and even dry pantry goods — they may ruin books, stored clothes, wallpaper seams, and food supplies. Signs of their presence include small yellowish stains or smudges, holes or notches in paper or fabrics, shed skins from molting, and small black droppings.

To handle silverfish infestations (or prevent them), the key strategies involve reducing humidity, improving ventilation, sealing entry points, limiting food sources, and using traps or deterrents. For example, dehumidifiers in damp rooms, storing items in airtight containers, regular cleaning, and sealing cracks/crevices are effective. In addition, sticky traps, diatomaceous earth, and professional pest‑control may be needed when infestations are significant.