I was in our local Global store on the weekend, they have now started stocking Thundershirts,
the woman who owns the store has great faith in them and uses one on one of her Border Terriers.
Apparently they work by placing pressure on certain parts of the body similar to TT.
Our Nutbars don't need them, although probably Jack could have benefited from one when he first came to live with us.
FYI she is currently retailing them at $39.99 Cdn, but that could be subject to change depending on duties etc.,