My dd is a few months over 3 years old, and she's been pee trained for over a year. She knows when she needs to poop and will ask for a diaper--she flat out refuses to poop in the potty. I wish I had advice, but all I have is commiseration. I'm just going with the flow for now. If by age 5 we're still having issues, I might try the "no more diapers" bit. Looking forward to others responses . . .