This is one of the few products that I have found really works. Our dog is extremely nervous and cannot be left alone. Within a few weeks of having this she calmed down significantly. After a couple of months we took it to my mother-in-laws where she stays during the day, to help her settle there and after a few days I noticed she was a little less settled at home, so replaced it right away. It’s brilliant, definitely worth a try and it’s much less pricey than a lot of the other options out there.