✔ 最佳答案
Don't listen to anyone else! (except ansmenam!)
There is a product called "Whink Rust Stain Remover" that will remove it instantly! It is available in grocery stores, drug stores, etc. in the detergent aisle. It is in a brown, plastic bottle.
If you have iron in your water and have yellowed clothing, try "Bright White" (formerly "Yellow Out") from the Iron Out Co. It works like a charm!