Solid Warewash Detergent with Metal Protectant Metal protection. Protects your pots and pans while delivering high-quality cleaning, destaining and water conditioning. Specially formulated to prevent corrosion of aluminum, copper, brass and other soft metals. Our high-performance solid detergents & rinse additives offer the convenience of automatic dispensing and the safety of a closed system. Solid solutions eliminate misuse, last longer and require less storage space than liquids or powders.