This concentrated version of our most popular boat cleaner formula packs a powerful punch and allows you to dilute the product to the desired strength. Biodegradable and Phosphate Free, this marine-safe boat cleaner does not pollute the water and is excellent for cleaning dirt, grime, blood, and grease from marine Fiberglass, Carpet, Vinyl, EVA Foam and Metal surfaces. Treated areas will be protected with a UV and Mildew resistant coating.