A couple questions... how old and how big (weight) are each or your Bps? How long have you had both of them, and you say the male hasn't eaten since October. Has he eaten at all while in your possession?

Lastly... I know you say they don't try or care about ever getting out, but I strongly suggest you do a search on all the threads with escaped or missing snakes. just because they haven't shown any interest in getting out before, doesn't mean that they wont in the future, or that you wont be devastated when it happens. For their safety and your mental well being, find a way to safely secure your lids.