This did the trick with my 11 year old Westie who started having anxiety attacks. Tablets didn’t work and I was not about to buy the expensive diffuser if I could help. The reviews for this one were actually better than the big named brand and I worked for my dog. Within minutes he started to relax. I also purchased the spray that I use on a bandana when needed. I have actually turned to diffuser of as we seem to be ok now. But if I notice he is not settling I use the bandana.