Seeing a small, silvery insect quickly disappear under a cabinet at night may mean you have silverfish. These wingless insects have flattened bodies, long antennae, and bristle-like tails. They are generally harmless to people and pets, but frequent sightings can signal excess moisture or hidden damp areas. Silverfish prefer dark, humid spaces such as bathrooms, basements, kitchens, closets, and areas near plumbing.

They feed on materials containing starches and carbohydrates, including paper, cardboard, wallpaper, book bindings, crumbs, and some stored foods. Repeated sightings may also come with shed skins, scales, droppings, or minor damage to books, photographs, clothing, and paper products. However, seeing one insect does not necessarily mean you have a major infestation. The most useful first step is reducing moisture. Check for leaking pipes, dripping faucets, condensation, and poor ventilation. Use bathroom fans and consider a dehumidifier in persistently damp areas. Keep storage spaces organized and remove unnecessary cardboard, newspapers, and piles of paper. Vacuum along baseboards, inside cabinets, behind appliances, and around plumbing openings. Sticky traps can help identify where silverfish are most active. If sightings continue, consider contacting a licensed pest professional. Finding silverfish does not mean your home is dirty. Often, correcting humidity, moisture, and hiding places is enough to make the environment less attractive to them.