Here's what happened tonight though. He told me again that he thought he needed to go. I asked him if he really needed to go or just wanted a treat. He sat there for a minute and then said, "I think I'll just choose the treat." My husband and I burst out in laughter. Oh my little guy...you crack me up!
I told him that he was going to run out of treats very soon and that I'd just have to buy candy. Surprisingly, he was totally fine with that. I think though that I'll still head out and buy some more of the "good" toys. It's been a GREAT motivator.