If there’s one subject that shows up in my inbox more often than any other, it has to be rust. Ugly, orange-ish stains on tubs, showers, toilets, washing machines, sinks and even stainless steel. One ...

Q: I have a big very old tub that I love, but the shower handle is broken, and parts of the inside porcelain enamel have rust stains. What's causing them and how can I get rid of them? A: Two problems ...