FOAM-LESS limits foam in your extraction cleaning equipment, which protects equipment and preserves cleaning effectiveness. It controls foam from detergent residue build up from previous cleanings and foam created by high water pressure and/or flow during extraction. Add to vacuum hose while cleaning or to waste tank before cleaning. Dilution Ratios: Add 8 oz. to gallon of hot water for use in vacuum hose or 1 to 2 oz. of concentrate directly to waste tank.