Harris Famous Roach & Silverfish Killer Tablets (6oz), Treats a Minimum of 12 Rooms, 145+ Tablets Included Great Value - Minimum of 145 tablets included to treat a minimum of 12 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 When you are ready to use Harris Roach Tablets to control roaches, ants, waterbugs and silverfish, you will want to now use more than 12 tablets per room. Suggested places for domestic application: Place tablets under and behind the refrigerator, stove, sinks, tubes, dishwashers, anywhere there is moisture and warmth. You can place the tablets in cracks and crevices along the basements and also in the corners of cabinets, and closets. Make sure that pets and children will not have access to these areas. To treat cabinets and dressers that have an infestation, place behind the drawers or inside the drawer wells. You can re-apply as necessary, they will remain active for up to 2 years if they remain dry and free of contaminants, such as insecticide sprays. We recommend you put fresh tablets out every 12 months. May be used in homes, restaurants, markets, schools, warehouses, factories, offices, hotels, motels, hospitals, nursing homes, garages, grocery stores, apartment buildings, new construction, industrial plants, theaters, ships, boats, trains, trucks, yachts, camps, mobile homes, buses, zoos, kennels, military bases, libraries, utilities and sewers.