It was a new toilet, a $400 low water energy efficient one. I cannot afford to replace it. The stains (brown) are not from hard water, as there was no water in it. The "solid" material is out, but how do I get i
A solid or liquid composition for removing iron from stains on hard, smooth surfaces, comprising (a) a sufficient amount of a hydrogen ion source to produce a pH of between about 1.5 and 4.5 under operating conditions; (b) an amount of a chelate agent sufficient to couple the Fe+++ prese...