Summit Brands Iron Out Automatic Toilet Bowl Cleaner

Best on Rust: #1 Heavy-Duty Rust Stain Remover Brand,Specifically formulated to repel rust and hard water with every flush of your toilet,Convenient rust stain solution Long-lasting formula prevents rust stains from forming in toilet bowl for up to 45 days,Safe for use with all toilets, internal toilet components, plumbing and septic systems,Simply drop tablet in toilet tank and let Iron OUT do the work for you