I've fed my adult bp twice. The first time, I fed him a small rat. He took it down without a problem. The second time, I went with three monster-sized mice (which he took without hesitation). We were having really nasty weather, and the pet store didn't have small rats, and their truck was delayed by the weather.
I think I may just stick with mice, as the cost difference is negligent ($4.50 for 3 mice/ $4 for a small rat), and if he decides not to eat for however long, there's no chance of me being stuck with a rat too big for him.
The rat put up much more of a fight than the mice, but seeing as how he took it down without injury or anything, I'm not really taking this into consideration too much. It's mostly just the thing about mice not getting too big.
Before I decide on this for good, is there ANY reason I should stick with a rat?