Q: My fiberglass shower pan has a stain, presumably from hard water, that I cannot remove. The tile and glass for the shower is new, but the pan is original — 22 years old. I have tried commercial ...

I’ll admit it. I’m not the best housekeeper and I’m frazzled. My tile shower floor is filthy with hard water stains. I don’t like using harsh chemicals for a number of reasons, and because the stains ...