They also feed on mold or fungi that can grow on various surfaces. They are fast-moving and can travel throughout buildings. Once these insects find a good source of food, however, they stay close to it. May lay eggs at any time during the year, and take 19-43 days to hatch. The life cycle from egg to adult is three to four months.
Silver fish are active at night or are active in dark places found throughout the structure.
Can be a problem year round. Silver fish are found in basements, kitchens, sinks, bathtubs, in bookcases, on closet shelves, behind baseboards, wallpaper, window or door frames, wall voids, and sub-floor areas. Attics are a favorite place for silverfish due to the abundant food sources due to the recycled blown in paper insulation and storage boxes. You may see them trapped in sinks and bathtubs because they enter seeking moisture and are unable to climb a slick vertical surface to escape. Fire brats will be found in similar but warmer areas.