Bizarrely I have found this to work where I found the DAP diffuser to be ineffective. We have found it helpful for settling our convalescing dog, but it doesn't help when she's very stressed. We use this in conjunction with a Thundershirt and Dorwest Scullcap & Valerian for our Whippet's separation anxiety when left on his own without our other dog. These 3 things together do work - we record him when we go out and he doesn't bark, whine or chew anything he shouldn't. He's fine being left with our other dog, but on the few occasions we need to leave him on his own, the DAP spray means we don't have to have a diffuser on all the time, which works out much cheaper.

Review by Fran Hill