Bio-Dex Oil Out Enzyme cleanses and clarifies your pool water by digesting and coverting oils, grease and other debris into carbon dioxide and water. This superior clarifier removes oils from water on contact - including motor oil. Oil Out Enzyme is non-toxic, non-corrosive, non-carcinogenic and hypo-allergenic. If you're in search of a product that keeps filters free of oil related residue, this is the clarifier for you ! Plus, Oil Out also : Is safe to people and the environment. Is 100% biodegradable. Allows you to swim immediately without waiting. Is even more powerful when used with Clearex 500 - for a super water cleaning combo.