Awesome All Purpose Cleaner - Rust, Lime, Calcium cleans rust stains from metal, chrome, porcelain, brick and stucco. Remove lime from bathroom showers, tubs, toilets, sinks and scale from coffee pots. Wipe out calcium deposits from household tile, glassware, tea, coffee pots. Septic safe, too! Each trigger-style spray bottle holds 32 oz. and there are 12 bottles to a case.