TankTechs RX Probiotic RV Tank Treatment is an all-natural biological sludge comsumer that multiples, continuing to reduce odor and sludge for the lifecycle of each tank treatment. up to 64 treatments. Initial treatment add 2 oz or more. Regular treatment add 1/2 oz to maintain tank. When dumping, do not empty tank completely. leave approximately 1 inch of liquid in tank to maintain the existing culture of mature, beneficial microorganisms. It is the only product designed to clean during storage.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov