The Tornador Car Foam Gun uses pressurized air to release loads of foam from all-purpose cleaners, soap/wax combos, and surface protection liquids. This is a cost-effective and highly efficient method for applying cleaners to exteriors, wheels, and carpet! For Best Results: Pour 2-3 ounces of product in the Tornador Foam Gun tank and fill the rest with water. Attach the foam gun to an air compressor, setting the PSI between 75 and 90. Pull the trigger and lather your desired surfaces in foam. This is the easiest and most fun way to detail!