Unfortunately one of my other dogs chewed it off him so that was twenty quid wasted. He did have it on for five days and I saw no difference. Will not be buying one again.
I foster dogs for the Dogs trust freedom project, occasionally we get a dog that is quite emotionally upset, apart from love and care, we have used the DAP defuser, it really seems to help, we also have used it, starting about 3 weeks before Guy Forkes, and it also seems to calm our own dogs when the fireworks are going off, not yet used a collar, but deffinately have noticed a difference using the defuser.