I haven't heard of any particular brands, we have a grooming forum that might give you more information.
Yorkie Grooming Talk - YorkieTalk.com Forums - Yorkshire Terrier Community Here's a thread that talks about ear hair plucking and someone one got the ear powder from Petsmart.
http://www.yorkietalk.com/forums/yor...-ear-hair.html Or you could just do a google on that particular brand.
Oh, I thought you wanted a product for use in plucking the ear hairs, I guess this product is for mites? Maybe you could check with your vet.