It removes the toughest household stains like rust, mineral deposits, hard water, and much more. This new high performance formula leaves no residue after rinsing. Use on: Glass and plastic shower doors, ceramic, brass, grouting, fiberglass chrome, stainless steel, boats, bathtubs and shower stalls, concrete, copper, floor and wall tile. Safe for septic tank. Size: 32 fl. oz. trigger spray.