Iron OUT, the #1 brand rust stain remover, offers Iron OUT Automatic Toilet Bowl Cleaner, specifically designed to repel rust and hard water stains with every flush of your toilet. The concentrated, long-lasting formula cleans rust away and repels new stains from forming for up to 45 days per tablet. Iron OUT's heavy-duty rust stain remover powder is specifically formulated to easily rinse away the toughest rust stains, eliminating the need for scrubbing. This multi-purpose and versatile powder is perfect for use in removing and preventing difficult rust stains in bathrooms, kitchens, appliances, laundry, water softener maintenance and many more applications in and around the home. Ideal for geographic regions with hard water and high iron, Iron OUT is best on rust!