The Giant Destroyer is a fuse lit gas cartridge. To use locate crescent shaped mounds with signs of recent gopher activity. Find the horse shoe depression on one side of the mound. To locate the mainrunway, probe ground 15 to 18" from the mound on the same side as the depression. Dig down to the main runway, taking care not to block it off with soil. Create an opening large enough for easy insertion of the cartridge. Collect enough soil and other material to close the opening. Light the fuse and insert fuse-end first. Immediatly cover the opening, taking care not to smother the cartridge with loose soil. Cover any openings where gasses escape. Repeat on all active mounds. The Giant Destroyer can also be used for moles, ground squirrels, woodchucks, skunks, and norway rats.