I use one and add hand warmers also. They work great most of the time. I had a nice 8 pt. buck sneak up on me this fall, and when I noticed him he was only six yards from the base of my tree. In my excitement, I drew my hands out of the mitt too fast and he heard me. Bummer!
But, there was a good ending to the story. Fifteen minutes later a doe led a good 9 pt. buck at eight yards! I was ready for this one!
I won't give up on my muff - just have to look around more!
Bernie Bjorklund
NC Iowa/SW Wisconsin