Blah, anything to do with live rodents disgusts me. Well ok, not really. I do keep one Rattus rattus in the living room where our boids or and they don't seem much affected by it even though, I believe the Rattus rattus is the natural prey for burmese. However, a large number of rodents in the same room, doesn't seem like the hottest idea to me. I think it could work, but just thinking about it is giving me an asthma attack. (I have BIG TIME allergies, even frozen sets me off.)
Rattus rattus is the black/wild rat while Rattus norvegicus is the domestic/brown rat (the one most of you keep in your freezer).