An easytouse cleaner for removing surface rust and stains from virtually any surface, including: steel, stainless steel, cast iron, fiberglass, chrome, and more \n Spray on Rust Free and allow to penetrate for no more than 3060 seconds, then wipe with a dry cloth \n For heavy rust on metal surfaces scrub with a Scotchbrite pad \n After use, wash area with a mixture of soap and water