EPA-registered sanitizer for use on walls, floors and other hard, non-porous surfaces. Safe for sanitizing food contact surfaces. Authorized by USDA for use in federally inspected meat and poultry processing plants. USDA rating: D-2; sanitizer for surfaces that do not always require a rinse. 90 RTU gallons per bottle. 2 liter bottle. This product is a mandatory purchase item for the United States Postal Service.