Add Yahoo as a preferred source to see more of our stories on Google. Rust spots are common—even on “stainless” steel—especially on knife blades made with higher carbon that’s more prone to corrosion.

Unloading the dishwasher feels like a simple chore until you realize your dishes are not exactly clean. Whether it is cloudy glassware or rusty steak knives, the result can feel dramatic. Rust on your ...