We've had success! At 7:33p.m., pee pee was done in the potty! It only took sitting on the potty for an hour, which was Hoss' choice. I think he was determined to pee pee at least once today in the potty. He was very excited and we had a big celebration consisting of jumping up and down, screaming, clapping and hugging! You would have thought we just won the lottery.
Here is the sticker chart with the first sticker.
And here is Hoss with his prize he picked out of the "surprise box" for pee peeing.
(When I asked him to say cheese for the camera he backed up against the wall and froze. Please ignore the mess on his shirt, he's a messy eater.)