I have been involved in dachshund rescue for many years. My latest rescue girl was a bundle of terrified anxiety when I got her, and I was skeptical that the Thundershirt would help. While it does not work for every dog, with her it was a miracle. My other rescue is well adjusted except when he hears loud noises (thunder, fireworks, construction). During one especially loud thunderstorm, I put my girl's Thundershirt on him - and he immediately calmed. I ordered his Thundershirt that evening, along with the anti-anxiety spray. I spritz that lightly on their Thundershirts if I'm anticipating an especially stressful situation for them. I am totally pleased with thundershirt.com, their products, and their support staff. I am a very satisfied repeat customer.