Q: I live in Southern New England and, in the past, I have had problems with undercarriage rust ruining brakes, mufflers and even the frame of the car. I get the same story: Drive it more, keep it ...

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 cast-iron skillet that I have been using for a few years. It has brown, rust-colored stains that don’t come off, no matter what I do. I’ve tried kosher salt and a small chain, soap, a ...