Does anyone use one of these? Daisy was misbehaving nonstop in training class (2 time outs!) so after class the trainer showed me one of these. It took both of us to get it on her but I walked her around the store twice and the change in her walking was amazing so I'm going to try it for a week. She definitely makes it difficult trying to put it on though. We argued for an hour about it, walked with it for 5 minutes and she snuck it off! Oh well, we will try again today! She learns new things very well with the clicker so I'm trying to teach her that putting her nose through the loop is a trick!