I used this device perhaps 6 times.  When I put it in the freezer I noticed the bottom of the freezer was blue and though someone had dropped a popsicle on it.  Nope, it was coming from the little plastic nub in the back.  Had to throw away everything it leaked on in the freezer.  I have almost all the attachments for my Kitchenaid and they all work great.  This one has a design flaw based on all the reviews.