Has anyone heard of Thundershirts for anxious dogs and are they any good? I have two Greyhounds, one of whom is very anxious and I'm wondering if it would be worth the outlay. We are approaching firework season in the UK (it's actually supposed to be 5th November only, but seems to last for six fucking weeks) and I'm reluctant to go down the route of sedation over a sustained period. Just wondering if anyone has any experience of Thundershirts. I already give the dogs Valerian and Skullcap.