[Moses]

Please do not use the Shock collars on your dogs. This can cause other problems as well. You will see even Caesar and Victoria are totally against them and they have shown the other problems that can arise from these collars. There are other ways to work with a barking pet Start with training. Use treats and when they bark with an aggressive voice say SILENT. and when silent give a treat immediatly. It will take a little time but they can be trained not to bark all the time. But Yorkies are also known to be watch dogs. If someone comes near your home they are going to bark.

Good Luck!