Originally Posted by DawnMarie
My grandma used to get out rust stains out by using Whink. It's in a brown bottle, and I don't know for sure if it's still available. But, it worked.
Otherwise, I'd try BIZ or Grandma's Spot Remover.
I have used this several times with great success. I would suggest you try putting a dab on the back in the seam allowance to be sure it is ok on your fabric before trying it on the front. Also BE SURE you don't get it on the enamel of your washing machine...it will dull the finish.