It took leah getting really rashed one day to start using the potty to poop. She was at preschool and evidently pooped in her pullup and didn't let a teacher know right away or they didn't get to it right away. So on the walk home, she started complaining the her bottom hurt. When we discovered the rash, I described how poop comes out and that it smears all over if you go in a pullup or diaper. Then went on about using the potty and it won't get all over....she started using the potty and barring a few accidents has never looked back! (sorry for the graphic, long detail) She also had to adjust to pooping sitting down!