RD-61 is a citrus based product that can be used to clean ANYTHING! Just spray and wipe grease and grime away instantly! RD-61 can be used to dissolve vegetable oils, petroleum oils, animal fats, grease, sap, and asphalt. RD-61 is also used to remove gutter streaks and bilge streaks. With its refreshing citrus scent, RD-61 leaves everything smelling fantastic! RD-61 can be applied by pump-up-sprayer, brush, cold water pressure washer, or hot water pressure washer.