All good advice so far ... if you read around the internet and speak with different people you'll learn that there are many many ways to feed your ball python when it comes to selecting prey size ... my advice would be to either stick with the two adult mice, or if it's convenient for you, switch to a large wean or small, small rat once per week. I personally feed my snakes smaller sized meals on a once a week feeding schedule and have had great success with that methodology over the years. I'm certainly not saying that feeding larger is wrong, just not for me.

Another thing I'd like to point out, after that second mouse is eaten when it appears that your snake is "still looking" for food, that has very little to do with still being hungry as you and I know it, and more to do with the animal still being in "hunt mode". The snake is still in the mindset of looking for prey and will often times even constrict and kill prey but not eat it while in this mindset. This behavior is similar to that of a dogs when they eat a bowl of food and after emptying the bowl sniff the area all around the bowl looking for more ... once they see that all the food is gone, they snap out of "hunt mode" and return to a passive restful state. Of course this is just my opinion, but it's one that I've formulated after working with a lot of ball pythons over a long period of time and in that time doing a whole lot of feedings.

Hope this helps.

-adam