I did ask her what shampoo and conditioner she uses and she told me one of the two shampoo's which I hadn't heard of before so I forgot the brand. I'm going back to the dog show tomorrow and will ask her then what shampoo she uses on the dogs. She's been showing and raising Yorkies for 25 years, so she must know what works really well by now.
The other shampoo she uses once a month, and after all the shows is Neutrogena anti-residue formula. The conditioner is Neutrogena Triple Moisture Daily Deep Conditioner.