L.S.
I'm in Lafayette too! And my oldest who is almost 5 finally went poop in the potty at 4 1/2. I feel like we tried everything from giving M&M's to literally offering Full candy bars, spiderman parties, Disneyland trips, and nothing worked. We tried having conversations about it with him, and really tried to reason with him and nothing! And then I did a sticker chart and it really worked for us. He got to pick the stickers, and he got to put them on the piece of paper after every time he went. After 7 stickers we got to go to Boswell's and pick a small toy and it finally worked. I think it made him take ownership. Hope that helps!
LS