Dekko Silverfish Packs, 1 Box Silverfish packs are an economic and easy way to control silverfish. Silverfish simply eat through the pack and ingest the poison inside. Place in closets, drawers, bookcases, basements, garages and other dark hidden places. Each pack lasts up to 4 months. Made in the USA. Packs are an economic and easy way to control silverfish Silverfish simply eat through the pack and ingest the poison inside Place two to three paks in each infested area Economical and easy to install Includes 24 packs per box