I have a white steel tub that was brown, brown when we moved in recently.
Today I tried to get rid of the stain and was 80% effective just using plain
vinegar (4.2%). It just dissolved away so I assumed that a product like CLR
and Lime would finish the job. No such luck. Has anyone had success with
easily available products that will finish my job and get me out of
installing a new tub! Thanks.