you can complain to your local authorities - but its really HARD To shut down a mill and can take years - if these people are neglecting the dogs they can come inspect based on your complaint - the other thing is you can write your state government for stricter laws and the USDA's failure to enforce the Animal Welfare Act (AWA).
www.house.gov www.senate.gov
We have a site called Millbusters you can join and there's alot of info on that site - it's a sister site to YT and we'd love to see you there -
http://www.millbusters.com/forums/index.php
Poor dogs - I hate hearing about them living outside