Deposit ring in toilet bowl
My 1930s white porcelain toilet bowls have a faint gray deposit ring at the waterline. I use the Soft Scrub with bleach and it removes the mildew ring, but the (calcium?) deposit ring stays. I'd like to get rid of the deposit because it attracts mildew to grow more easily. Would CLR possibly get rid of this? I don't want to spend money on scary chemicals if I don't think they'll work. Thanks!