Dr. Bronner's - A simple recipe for windshield wiper fluid using our Castile Liquid Soap: in an empty 1 gallon jug, combine 1 oz. of soap with 8 oz. of isopropyl alcohol,
SPLASH 1-Gallon De-icer Windshield Washer Fluid in the Windshield Washer Fluid department at Lowes.com