GENERAL INFORMATION: Silverfish eat paper and glue with great gusto! Dekko Silverfish Paks attacks them by infusing the boric acid, paper pack and glue with an attractant that is irresistible to the critters and kills them quickly once consumed. Unlike powders, Dekko Silverfish Paks are clean, won’t leave residue on your hands, or in locations where they are placed. In the case of severe infestation, complete control may take from 3 days to 4 weeks depending upon conditions. These are very effective to control Silverfish which are sometimes also called Firebrat or Bristle Tail. Highly recommended if you have lot’s of books because these little buggers like to eat the glue on the book bindings. HOW TO USE: Don’t open or crush individual packages. Silverfish show up most often in dark, dry areas. Place two or three packs in each infested area or location where silverfish might show up. In addition to drawers, closets, bookcases, basements and garages, use these packs in the attic and under the house. They will solve your silverfish problems quickly. If you don’t have the critters—and most folks do but don’t know it until the numbers get really large— Dekko Silverfish Paks will insure you don’t get the problem. An ounce or two of prevention is worth many pounds of aggravation… Directions on the Dekko Silverfish Pak carton state that for maximum efficiency, one should replace the packs every three to four months. ACTIVE INGREDIENTS: Boric Acid, 20% Inert Ingredient: 80% WHAT YOU GET: 1 Box Containing 24 – 0.001 oz Paks