How do I get rust stains out of white clothing?
You might be tempted to bleach rust stains away, but chlorine bleach can cause the iron in water to precipitate out into fabrics, leaving additional stains. Instead, treat the stains with a solution of equal parts lemon juice and water, letting the mixture sit for a few minutes. Then hand-wash the garment. If the stain has already set, try this: After you soak the stain with lemon juice, hold it over a steaming teakettle until the stain is thoroughly steamed. This may loosen the stain’s hold on the fabric and enhance the bleaching action of the lemon juice.