Enzyme Cleaners contain safe, scientifically formulated strains of live bacteria and enzymes that will clean sinks, drain lines, septic systems, RV holding tanks, porta-toilets, garbage disposals and grease traps of organic matter such as grease, food particles and waste. They actually digest most clogs and keep pipes clean deodorized. Both contain the maximum strains and counts of bacteria available today. Works great as a septic tank activator.