Benz Oxy CleanzeOXY CLEANZE Thick gel: Kills rust, dissolves limescale, removes rust stains from most surfaces Removes rust and rust stains from steel (inc stainless), cast iron, painted surfaces, metal cladding, most renders & masonry Also removes: Sodium Hypochlorite (SH) stains from lead Limescale from glass Bird lime, exhaust, waterline and rust stains from GRP boats without affecting the gelcoat