The secret is oxalic acid. Found naturally in rhubarb and other ... I keep it handy in my laundry room to remove rust stains from the inside of my clothes washer. No big deal.

If those classic household items aren’t quite getting the job done, consider using oxalic acid to remove those final rust spots. Oxalic acid is the common agent in commercial rust removers ...

Potatoes contain oxalic acid, which converts rust into a water ... Can I use hydrogen peroxide to remove rust from stainless ...