It is a terribly sad story but I thought you should read it. Maybe you could pass this onto that groomer. I hope I am not crossing the line by showing you this. It's just that someone warned me not to use them and I am forever grateful.
http://www.yorkietalk.com/forums/att...hloe1_crop.jpg
In the "search" (next to new posts) type in cage dryers. There is a lot of info about grooming in general--not just cage dryers. Good luck and I know that you are going to be a fantastic Yorkie mommy bc you have already been researching so much.