Does anyone out there have tips on removing dried mildew stains from clothing (specifically - denim)? I had a pair of jeans on the floor in the laundry area and they got wet when a bit of water came in from a heavy rain. I was away for the weekend and didn't see them until they had already air dried and stained. I've tried stain remover and washing again, I've tried soaking them in water/vinegar and washing again and they are still stained. The spots do look a tiny bit lighter but they are still there.