I bought this on recommendation due to my sensitive, reactive, nervous dog. Within 10 minutes of using it in the house, he chills out! We have used it on walks and although he is still reactive to other dogs, this has decreased and he is not as hyper towards them. I am pleased with the progress and I would say it is a useful aid if your dog suffers any of those problems. You need to spray it on a bandana or pet bedding and not directly on the dog. It smells a bit cheesy, but this is nothing to worry about and wasn’t a concern for me. I will definitely be using this when it is firework season and I am really quite positive that it will help calm the dogs anxiety.