B.M.
What finally clicked from my son was taking the poopy from the diaper and dropping it in the potty. I then let him flush it. We also did the Poo-poo or Pee-pee dance each time. I did not have to reward him with toys or anything (couldn't afford it!) but praise really worked. I did wait until he was over 3 1/2 years old just because he did not seem interested in it. Running around naked for him did not work. He would just pee on the floor. The same with my daughter. I just had to mentally prepare myself to deal with clean-up for that week. With my son, it only took a week but he was also older than my daughter when she started. She will be three in June and has been potty trained since January. I did not even have to train her. She did it herself. However, she still wears diapers at night.