Rhino RV Holding Tank Enzyme Treatment - 4 oz. Mfr # 41515Rhino camper holding tank treatment 4 oz bottle features a bacteria/enzyme to digest waste and break down tissue for easy biodegradation. Natural formulation will digest waste, tissue, fats and proteins. Will activate only in the presence of material requiring digestion. Unlike most enzyme treatments, this new chemistry provides a stable product with a long shelf life that is not temperature sensitive. Also contains a buffering agent to prevent acid formation and septic odors. This product harnesses the natural process by which nature digests waste. All components are environmentally friendly and biodegradable. Features a fresh pine scent. Two-ounces can treat up to 40 gallons. Also Available:16 oz. Squeeze BottleRhino RV Holding Tank Enzyme Treatment - 4 oz. Mfr # 41515