Anyway, I just rotate them through...I probably change them every couple of days. After everyone takes a bath, I pick it up, fold it in two and drap it over the edge of the tub to dry. Then when I think about it or notice it, I get out another and drop the used one in the laundry.
As a matter of fact, here is a picture of it! (You can even tell it's a little damp still, I think.)
I just love this digital camera! LOL