We think this has helped one of our cats quite a lot who is constantly stressed and on edge. He seems a lot more relaxed and less anxious. At the beginning we used to have it on for long periods of time and move it from room to room. He became noticably more relaxed over the few weeks and has now reached a point where we no longer really use it unless we have friends or family around as he hides under the bed, we turn it on and a few hours later he often will come out. The only problem is that it does really smell of stinky feet. It’s not unbearable and doesn’t make the whole house smell but it is quite strong and will stink out a small room. Once it’s turned off the smell does go quite quickly. For us, the bad smell is worth having a happier cat