I got this for my friend because her dog is absolutely terrified every 4th of July. The sound of the fireworks has Rebel running for cover and cowering in the closet, or under the bed every year. My friend said this stuff worked great to quell his fears!! He was relatively calm all night and never once tried to run and hide!! She said she uses it now whenever there is a thunderstorm to calm him. She also said his coat is looking healthier and he has less dander from using this.