Have you checked Craig's list?
You may find someone local and see a lot of groomers coming to the home as well and they advertise on that site... a friend of mine told me about this site not too long ago and here in MA is very popular... and they have one for each state i think...
I am with the girls who recomended pet smart... if you can not find one anywhere else you can drop your baby there and at least they have that window everyone can see what they are doing... my main concern is make sure my dog is not going to be mistreated during grooming....
