Review on 🐶 Sharples Anti Barking Device - Bark Control Deterrent Tool for Dog Training, Stop Barking Safely - Suitable for Indoor & Outdoor Use, Effective up to 50 Feet Range (Black) by Paul Curington

It really works and it's crazy to think that something so small can work. The neighbor has a naughty German shepherd who barks every day from 7am to 8am. Put it inside on the windowsill and pointed at the dog. Now all I hear is a dull bark. Get another one to place on a different window for full coverage. This is a game changer. I just hope the dog doesn't get used to it. That's less than you might expect. You need your own 9v battery, slightly larger than a 9v battery, which is perfect for me.