[Krusty Driver]

I've been using a natural sheepskin wash mitt and I've used it about a dozen times already. It seems the wool is coming off the leather part of the mitt. So my question is, once your done washing your car, what do you do with the mitt. Just rinse and hang dry? Throw it in the washing machine, then hang dry? Or, do these just naturally fall apart after a while? They're kind of expensive so I don't want to keep replacing them if I don't have to. Is there anything that works better or as well?