Rocksolid, Gallon, Heavy Duty Concrete Cleaner, Formulated To Clean Grease & Oil Stains On Concrete, Brick & Masonry, Also Prepares Surfaces For Finishing By Promoting Adhesion When Staining, Sealing Or Coating, Suitable For Interior & Exterior Use, Removes Oil, Grease, Tire Marks, Dirt & Stains, Cleans Surface Prior To Coating, Fast Acting, For Concrete, Brick & Masonry, If Cleaner Dries Before Rinsing, Apply More Cleaner, Scrub & Rinse.