Try using white vinegar. Fill each glass beyond the bleach mark. let them sit overnight. Just rinse out the next morning.
By
03/23/2009
Mr. Clean Magic Erasers. I have hard water with a lot of rust in it, about once a month I use this on all my dishes to remove the rust. I also use Calgon water softener for doing my dishes that leaves a residue which the magic eraser removes.
Magic erasers are great for many, many things. Give it a try - I think they're like $3 for 2 of them. Good Luck