K.O. Kills Odors Bio-Active Treatment - GallonK.O. utilizes live, odor-killing bacteria that digest liquids, solid waste, and paper, totally emulsifying them so there&';s no need to add tissue digesters or other boosters to your system. The bacteria in K.O. neutralize the odor-causing elements in waste, effectively converting the contents of your holding tank to an odor-free product. Chemicals only mask the odor temporarily. Although they kill odor-causing bacteria, chemicals also kill other bacteria that suppress odor. Chemicals can cause the odor problems you&';re trying to solve! Enzymes stimulate the breakdown of waste already in the tank, but are not effective against odor, and are diluted by new waste as it is added.Features: Kills odors in marine and RV holding tanks Bio-Active Non-Toxic Non-Caustic WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.