I have two labradoodles, I adopted them when they were almost a year old. I put the bark collars on them to take them on walks. I have not shocked them just the sound and vibration deter them from barking at other dogs and people. This was a game changer for my dogs. Now I feel more confident walking them. I like that I can easily check the battery life. It’s important to make sure they don’t have their dog tags on when using.