Thanks again everyone for the helpful advice. I am going to try and get my guys to eat fresh pre-killed. I have been looking into the ways to humanely putting rats down, and the Co2 chamber seems to be the best way for me. I just can't kill them by hand. I personally love rats, and since the snakes have to eat, I don't want to add to their suffering when feeding them to the snakes. I just hope all of my snakes will trade over.