Most often, homeowners detect silverfish when they find one on the floor or in a sink or bathtub. Their feeding damage also can indicate their presence, along with their tiny pepperlike feces. Addressing a silverfish infestation requires treatment of both adult silverfish and their harborage. Most do-it-yourself remedies prove ineffective over time, with brief periods of relief followed by another infestation . There are a variety of silverfish traps on the market. However, these traps target individual insects and cannot prevent entire silverfish populations.