Have you ever moved a piece of furniture only to discover a mystery orange-red rust stain on the carpet? Or maybe your favorite shirt suddenly has a new rust stain on it after a recent wash. No matter ...

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 ...