They are readily introduced in cartons, papers, books, and magazines that are moved from one building to another. They can move long distances along heating pipes in conduits and plumbing in the house. The life cycle of a silverfish consists of an egg, nymph and adult stage. The nymphs or immatures resemble the adults except for size. Under favorable conditions, silverfish can go through a life cycle from egg to adult in three to four months.
Adults can live for several years.
Sprays should be directed under and behind baseboards, openings around plumbing fixtures, cracks and crevices, under and between cabinets, stoves and refrigerators. To achieve successful control, careful and complete spraying is needed. One or two repeated spray applications at monthly intervals are usually needed. Warning Pesticides are poisonous. Read and follow directions and safety precautions on labels.