^^ I totally agree. Once you commit to making the switch to f/t you shouldn't offer live again. I'd try at least 3 months of f/t offerings and if it still hasn't eaten then I'd give the snake a very small live feeder and start the process over. I'd wait at least 2 weeks after a refused meal to offer food again. That being said, BPs don't necessarily have to be on rats imo since they're not very big and there's other prey items they can live on like mice and asf's.