All in one kit – I have two golden retrievers. One is constantly hyper and anxious, the other seemed a bit depressed and has barking issues. They had resorted to being messy in the house. We have had this stuff a week now, from the very first day we noticed a difference. It has calmed them right down. We have only had one accident and our dog is barking a lot less. We are using the plug in and we spray the curtains. The dogs are listening to us more due to being in a more relaxed state. My husband refers to it as “ puppy dope”. I do notice that we do have to spray the curtains every couple of days to keep it’s full effects. We don’t notice the smell, perhaps due to having one of those release air freshener sprays. Highly recommend as long as you constantly spray with it.