Justsusie, does it work on hard water stains in the bathroom stool too? I have a problem there. Nothing seems to penetrate it because it is along the sides of the bowl and when I spray something on it, it runs down into the water right away.
A product called Lemishine worked wonders for me. I buy it at Walmart near the dishwasher detergents. They frequently are out of it so that might also be a testimonial to its effectiveness.
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