I actually picked one up at a local feed store about a month ago and haven't used it. When I finally opened it up to try it on Jenna this week, I discovered it was pitifully too small.
So back to the store it goes. Hopefully they'll have another I can trade up for.
How tight a fit do they have to be for maximum effectiveness? I'd gotten the XXS, which wouldn't have fit one of my house bunnies. So I'm looking at maybe a Small at the least, right? (Jenna is currently 6.8 pounds and longer/taller than most Yorkies I see.)
My mom needs one too for her terrier mix. Poor thing's terrified of gunshots, fireworks and riding in the car.
Peanut is at least one size larger than Jenna.