Dear Mary: Our water is very hard and as a result has created rust-colored stains in the fiberglass bathtub. I’ve tried to scrub it away with Comet, but that did nothing. How can I remove these terrible stains? MaryAnne
Dear MaryAnne: I’m going to assume you have already tried applying a paste of baking soda and white vinegar to the stains, allowing that to sit for a few hours. If that or the Comet didn’t work, I have two options for you, starting with a product you may have already but never dreamed you’d use in a bathtub: Lysol Professional Toilet Bowl Cleaner. Cover the stains with it and allow to sit for an hour or so. You may need to scrub a bit with a Scotch-Brite or similar type scrubber. I am reasonably confident this may take those stains away, that’s how well it works to clean fiberglass, acrylic and porcelain tubs.
However, if your stains are really stubborn—or you would need to go out and purchase the Lysol toilet cleaner—I’d skip that and go straight for the big gun in rust-removers, Iron Out. I love this product because unlike other commercial rust removers, it contains no harsh or abrasive chemicals. And boy does it work well to remove rust stains from just about anything, including fabric.
Good luck and be sure to let us know how this works for you. Read more