Review on Nzonpet Ultrasonic 3 in 1 Anti Barking Device: Effective Dog Bark Control Tool with LED Light & Cartoon Prints by Paula Whalen

I have 5 small dogs (3 Maltipu, 1 Cockapoo and Dorki). If ONE starts barking (at ANYTHING from the movement of air to actually tapping a person), they ALL join in. Their age is different, from 1.5 to 10 years. EVERYONE replied. Very fast. I don't like using ultrasounds unnecessarily because they are obviously uncomfortable with it. But this SUPER quickly taught them what "quiet" meant and what would happen if they didn't listen. They also get praise and love when they REALLY calm down, whether I have to use the device or not. So now they hear me say "girl shoo" OR "<name> shoo" in my mom's voice and immediately stop barking and THIS IS AWESOME. Even better, now one bark doesn't automatically trigger the other 4. *super happy dance*