Rhino Enzyme RV Holding Tank Treatment features a Bacteria/Enzyme formula to digest waste and break down tissue for easy biodegradation. Natural formulation digests waste, tissue, fats and proteins. Activates only in the presence of material requiring digestion. Advanced formula is stable, with a long shelf life and 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. Environmentally friendly and biodegradable. Fresh pine scent.