Product Description
"Does Not Contain Harsh or Abrasive Chemicals Long Lasting Formula Works to Prevent Rust Stains from Forming up to 45 Days Safe for Plumbing & Septic Tanks Iron Out Automatic Toilet Bowl Cleaner is designed to repel rust and hard water stains with every flush of your toilet bowl The concentrated formula prevents and repels new stains from forming for at least 45-days per tablet "