The OP clearly stated that they were previously on rats. He also clearly stated he fixed his temp issues.
By rat pup that can barely crawl I assume you're referring to something along the lines of a fuzzy or so and doesn't even have its eyes open. If so, fear not. They will not harm your snake at that size and they can safely be left alone with your snake. Glad you got them eating again. Balls can be a real pain in the butt sometimes, huh? It is part of their charm.
Thank you! This is one of my pet peeves and I'm glad someone has the guts to say it!![]()