Rust stains can be removed with lemon juice, salt, laundry soap and ammonia, according to chemstry expert Anne Marie Helmenstine. Laundry and laundry room expert Mary Marlowe Leverette also recommends using lemon juice and salt, or commercial rust removers found in grocery stores to remove rust stains from clothing.
To remove rust stains from items such as metal, the owner of the item should remove as much as the rust as possible. She should then apply lemon juice and salt onto the stain and let sit for 24 hours before rinsing with cool water. When removing rust from clothing, the owner should apply lemon juice and salt to the garment and then dry in the sun. Fading or bleaching may occur with certain fabrics.