AbilityOne 7930013815820 3M Twist 'N Fill - Bathroom Cleaner #4LAbilityOne 7930013815820 Porcelain cleaning solution is a mild acid cleaner that removes soap, scum and scale from bathroom surfaces including plastic, porcelain, ceramic, fiberglass, floors and fixtures. Authorized by USDA for use in federally inspected meat and poultry processing plants. USDA rating: C 2; for use in toilets and or dressing rooms. Green Seal Certified. 27 RTU gallons per bottle. 6 2 liter bottles per box.