All my towels are white. Lately, I have noticed rust colored stains about the size of a dime on some. Usually a round splotch, but some are more elongated. I have wracked my brain trying to figure out what they are and where they are coming from. They look like a rusty spot, but rust remover will not budge them. Nothing gets them out. Not pretreaters, not soaking, not bleach.
Has anybody come across this before or have any idea what it could be?
Its not limited to towels. I have found it on washcloths, bath mats and hand towels. I'm stumped.
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I don't have a front loader but every so often we really do a full out bleaching of it to get rid of accumulated buildup etc.