Thought I would pass along this experience. I got a stain on my ferrule from using Tiger's Brown Liquid Burnisher. I had used non-stick masking tape but the brown stuff soaked through - guess I got a little reckless with it. So out comes the Magic Eraser, and for this big job I thought I'd use pure grain alcohol. The ME+alcohol lightened the stain couldn't get rid of it. So I thought I'd try water, like the ME instructions say. ME+water worked much better - the stain was gone in a few seconds.
Magic Eraser is really kind of a miracle product. It also works great on getting the embedded blue chalk out of the shaft.
Magic Eraser is really kind of a miracle product. It also works great on getting the embedded blue chalk out of the shaft.