Another benefit of using CLR is that it can also remove the toughest toilet bowl stains caused by mineral deposits, which regular toilet cleaners with bleach won't work on. Other products may also ...

CLR Calcium, Lime and Rust Remover ... “The customer probably did not let the Zep Acidic Toilet Bowl Cleaner sit long enough on the stain,” Sheron Minier, a Zep technical services ...