Someone teaching a class at school recommended this recently and I'm trying to remember who it was. Perhaps Dr. Neer (who, btw, was just awarded Vet of the Year by OVMA!) or the guy they brought in to teach the advanced behavior class. I'll see if i can figure out who it was since they might have some ideas as to how to do this legally and logistically. I don't remember them saying anything about marketing the service, just that it would be a useful thing and that we should charge for it.