These are small, grey and flattened insects that are tapered toward the back with three long tails. They are often seen in bathrooms and in kitchen cabinets. They can, however, occur in almost any room of the house and prefer dark, damp areas such as attics or inside drawers.
The silverfish in houses are rarely found outdoors; these insects are primarily restricted to indoors. They are brought into houses in boxes, packages from grocery stores, newspapers and magazines, or in second-hand furniture. They are sometimes in clothes and will damage silk and cotton cloth.