Silverfish are nocturnal creatures and during the day will hide in high humidity areas like basements, under sinks in kitchen and bathrooms, in crawl spaces, and in laundry rooms. Silverfish cannot survive without humidity. In the evening they will come out of their hiding spots to feed on foods like paper, glue, wallpaper, fabrics, other dead insects, and pantry items like flour, oats, and cereals.
Silverfish are most often introduced into a home or other building in boxes or piles of paper that are already infested and that are brought inside. They will also enter homes through cracks and crevices found in foundations while foraging for food sources or a humid environment.
Silverfish aren’t dangerous to people, but they are dangerous to personal belongings and food sources. They will contaminate pantry items, put holes in clothing, and damage pictures and wallpaper. Silverfish do not bite or sting and are not known to cause any significant health risks to people.