Heavy-duty cleaning compound is a versatile cleaner that removes most spots, stains and grease from washable surfaces. Use to clean carpets, marble, aluminum, stainless steel, chrome, plastic, windows and mirrors. Authorized by USDA for use in federally inspected meat and poultry processing plants. USDA rating: C-1; for use on all surfaces in inedible product processing areas. 7 RTU gallons per bottle. 2 liter bottle. This product is a mandatory purchase item for the United States Postal Service.