Harris Famous Roach & Silverfish Killer, 4oz Tablets - Treats a Minimum of 8 Rooms, 95+ Tablets Included Great Value - Minimum of 96 tablets included to treat a minimum of 8 rooms, long lasting when kept dry & extremely cost effective EPA Registered - Registered with the Environmental Protection Agency (No. 3-1) for use in homes with people & pets Irresistible to Roaches - Active ingredient 40% boric acid w/ our formulated lure to attract roaches Kills the Entire Colony - Roaches carry boric acid back to their nests to kill the entire infestation Easy to Conceal - Use in hidden areas - under drawers, appliances and cabinets