BIO-DEX OO04 1 gal Bottle ENZYME Oil-Out Water Cleaner 4 per case. ENZYME Oil-Out eliminates oil from bodies of water working to digest and convert the oils to carbon dioxide and water. It digests oil on contact and is safer for both the environment and swimmers. The product also prevents scum from building up on tile. It’s a hypo-allergenic product that is also non-toxic, non-corrosive and non-carcinogenic so you can feel safe using the product in your pool. You won’t have to worry about hurting swimmers or the environment.