Camco 41511 Rhino Heavy Duty Holding Tank Treatment -Eliminates Tough Odors in Your RV Tote Tank for Up to 7 Days and Digests Waste and Tissue - Pine Scent , 4 oz (8 Pack) Bacteria/enzyme formula to digest waste and break down tissue Activates only in presence of material requiring digestion Advanced formula is stable, with a long shelf life and is not temprerature sensitive Contains buffering agent to prevent acid formation and septic odors Includes (8) 4oz. Single bottles