Last week I had a red that I knew was going to bleed, it felt like it would, looked like it would and I even took a wet piece of white fabric and rubbed it against it and some dye came off, so I knew it would. Brought it in and put it in the sink of hot hot water and not a thing came out of it. Couldn't believe it, I would have bet a hundred bucks, or yards of fabric that it would have bled. So a person never knows. I think the microwave idea sounds great.