Say goodbye to scrubbing rust stains and say hello to easy rust prevention with Iron OUT Automatic Toilet Bowl Cleaner. These convenient tablets are a quick and easy way to remove the toughest stains from your toilet bowl and tank. Its specifically formulated to repel rust and hard water stains with every flush for up to 45 days. Please note: This formula will not harm pets, but it is recommended to keep them from drinking from the bathroom toilet when the tablet is in use. Trusted since 1958, Iron OUT has been helping households remove rust stains in and around the home. Iron OUT is best on rust with a complete lineup of heavy-duty rust removal products to solve all your indoor and outdoor rust stain problems. Our cleaning products include tablets, powders, sprayable liquids for various in-home applications, and pre-mixed and ready-to-use liquid formulas that quickly remove rust stains from concrete, vinyl, and other surfaces outside the home.