[maggiesmom_2007]

How an Ultrasonic Dog Repeller Works

So far it is working. When they bark I press the button and say quiet, they stop barking. I will also be working with them this weekend. I would assume this would work in any way a training aid would work. So you could train your dogs to only bark when it is necessary. I did also find this article when I did some research on it before purchasing it.