The most powerful septic and plumbing energizer available today. Easy-to-use and store. Nontoxic, safe for pipes. Just drop 1 packet into the toilet and flush. One Flush strength (one 1/4 oz. packet equal to 109 lb. of other products), counteracts antibacterial soaps and cleaners. For use on septic tanks up to 1500 gallon, pipes, drains, leach fields, cesspools, grease traps, grey water systems, compost piles, pit toilets, RV's, and boats. Contains 3 applications (1/4 oz. packets). Blister pack.