Foam out ground-in dirt and stains.The 3x super-concentrated formula utilizes chelating agents that break the bond between dirt and the deck without heavy scrubbing. A few ounces will clean the deck of a 30' boat, making this as economical as it is powerful. PTEF polymers bond to the treated surface to help block future stains and damaging UV rays.Key FeaturesSafe to use, contains no harsh chemicalsCleans away ground-in dirt and stainsLeaves a protective coating to help repel dirt and stainsNo hard scrubbing or rubbingWill not remove wax or polishUse on fiberglass, vinyl, plastic, metal and painted surfaces