http://www.thepuppymillproject.org/new_home.html
Im a supporter of this group they did the same thing having volunteees wear hidden video cameras.
I hope you pist yours here, watch your legalitues, pup mills BYB and greeders love to threaten law suits so get some sound legal advice.
Please enlist any help needed here, this group of people can be very proactiv and generousin lending help.