This is the best cleaner we have found. It is the only cleaner that has been tested and endorsed by HAARTZ and the Ford Motor Company. HAARTZ is the world's largest manufacturer of convertible tops. Safely removes the toughest stains. Over spray will not harm painted finishes. Retards grease, dirt and mildew. Anti-oxidant formula with low PH and no bleach. Leaves no residue. Biodegradable. Must use before applying RT-VP protectant. 16 oz. spray bottle