For cleaning sinks, tubs, shower stalls, wall tile, drain boards, toilets, water fountains, stoves, appliances, swimming pools, etc. Contains no acid and will not scratch. Safe to use on porcelain, ceramics, enamelware, stainless steel, chrome, aluminum, brass and other metals. Quickly and effortlessly removes soap fil, grease, stubborn scuff marks, rubber burns, rust stains, etc.