24 Packets of DEKKO. Safe natural control of Silverfish. Do not open or crush paks. Place 2 to 3 paks in each infested area. Place in closets, drawers, bookcases, in basement and dark hidden areas. Also in areas where Silverfish inhabit under house and in attic if possible. When Dekko Silverfish paks are used as the only treatment, control may be obtained within 3 days to 4 weeks depending on conditions. Replace Paks as necessary to affect and maintain control. Replace every 3 to 4 months to maintain control.