Cleans and polishes stainless steel cookware sinks cooktops non-stone countertops ceramic porcelain and copper Cleans sinks tubs showers toilets faucets tile and grout in bathrooms Use for general household restoration projects use on door and window hardware knobs and hard synthetic flooring Can be used outdoors to remove plant stains and pollution grime on hard surfaces erases rust stains from concrete masonry and grout Cleans siding boats bikes grills tools and sports equipment. Do not use on gold silver polished stone or areas that are lacquered painted or mirrored.