I made a horrible mistake. I ordered a couple of bottle of Elmer's Washable glue. Tonight I grabbed a bottle and started gluing the backing fabric to the polyester bat. About half way through, I thought this glue is acting kind of odd...it wasn't washable glue. It was permanent glue and I didn't check the order when it was delivered. Nothing had dried yet and was still quite wet, so I pulled the backing off the bat and put it in the washing machine. Now I'm waiting for it to dry. Hopefully, the glue will have washed out, but I guess I'll just have to wait and see. ugh. I don't think I'll put it in the dryer. I think I'll throw away the bat. It was on sale so not so costly to dump it. Has anyone else done this?