The Thundershirt works for Teddy!
We are having severe storms right now. Our table umbrella and heavy metal table were thrown to the other side of the deck. Umbrella smashed. Tree branches everywhere.
Teddy isn't completely relaxed, but he isn't panicked and shaking violently. I don't have to worry that he will stress to the point of making himself sick. This is amazing considering the spectacle on the deck.