Buy a whistle instead!
I wanted to use this item to train my small dog to stop barking at me every time I leave the house. The audible and inaudible sound definitely got his attention. His ears went back and he went and sat on the sofa and quietly let me leave for work. I was able to do this only 4 times and the unit broke. No sound in any setting. Yes, I used a new battery and tried another new one. Great concept.Poor quality. It is as cheap as it feels. Very light weight plastic. Too big to put on a key chain. Buy a whistle and save your money!
Rating: 1 stars