"This diffuser works for our 14 month old collie. No more destroyed carpets or shoes when we are gone, even if he has to be alone all day (rare). We had one in living area and put another in sleeping area which is working better for a full nights sleep. Do not expect much change when you are with the aminmal, he is still raring to go when we are here with him. I notice no odors or other problem with smell or anything, so only the dog is affected."
