CARBON-OFF!® is a powerful gel that dissolves carbon build-up from metal surfaces. Spray or brush on, let set 15 minutes to overnight, depending on the amount of buildup to be removed, then rinse under cold water with a brush or scrubbing pad. CARBON-OFF!® works quickly and easily saving time and labor. SAFE ON ALUMINUM. Due to VOC regulations, not available for sale in California, New York or Utah. Removes baked on carbon from: Metal Surfaces. Brass. Stainless Steel. Waffle Bakers. Chinese Woks. Popcorn Kettles. Nickel Steel. Deep Fryers. Deep Fryers. Broilers. Pots & Pans. Rotisseries. Barbecue Grills. Roasting & Sheet Pans. Available in (6) and (12) 20 oz. aerosol cans, 19 oz. net wt.