I have a German Shepherd that I use that on, but no way would I use one on the yorkies, as some one stated earlier they have delicate tracheas. I have been through alot of training and with some great trainers with Max (GSD) and they would never tell me to do that with the yorkies. Give her time and go through training, people that have never had yorkies don't know what they are talking about, they are strong minded but they have delicate bodies.
