One thing to get CAUTIOUS about is working with ultrasonic Canine barking devices around other close by dogs. The sound may possibly have an effect on them, as well, resulting in confusion or stress. Applying these devices in the controlled setting in which only your Pet is present is best. https://pawpressnews.com/best-dog-deterrent-device-for-dogs-the-ultimate-solution-for-bark-control-and-training