Here’s the thing. There is no such thing as a good puppy mill. The good breeders, those that are careful about how they breed, how often they breed, and give the pets in their care proper food, socialization and veterinary care, don’t sell to pet stores. 

The commercial breeders, puppy millers, that put profit over the well being of the dogs DO sell their dogs in pet stores. 

There are no good puppy mills…it’s that simple