Purple Power Ultra is a shaking style cleaning solution. It's safe to use on a variety of materials like glass, acrylic and metal. This no scrub formula allows you to place what needs cleaning into the solution for 30 seconds (soak or shake!) and then rinse thoroughly. Repeat if need be and then let air dry. Purple Power Ultra can be re-used. It can even be mixed with rock salt for heavy duty cleaning jobs. Available in 16oz solution.