I only have 2 snakes, and feeding them in separate containers has always been fine to me. The main reason I move them is because of substrate, and I know that can be done with a cover or something to protect them from it. They know when they're about to eat as far as I know when they are put in their containers. They hardly bite, and my king is only biting because he is not feeling well. Besides that, he's only bit me once when he was a yearling or so. I appreciate the advice, but that is not what worries me the most, unless I am ignorant.