K.O. works when nothing else will. It is a safe, non-hazardous and non-polluting product which utilizes live odor-eating bacteria to digest the materials causing the odors.⢠A small amount of K.O. can easily keep a boat odor-free between pumpouts⢠Does not require adding tissue-digesters or other boosters to be effective⢠Digests liquids, solids, and paper⢠Requires well-vented holding tank to supply enough oxygen sustain the bacteria