I got this to try and stop my dog’s recent habit of barking at everything. The instructions are easy to understand and I LOVE that it can be used without the “shock” mode. It worked much better than I hoped for and was not traumatizing to the animal or me. The collar might be a little heavy for small dogs but it adjusts easily for a good fit. The battery lasts all day so training can stay consistent. Great product for gently training your dog.