My oldest was doing great in the beginning. She was about 20 months when we started. THEN, her little sister was born and she decided that if sister could poop and pee in her diapers, than so could she! Few months later, she started showing interest again and she didn't like being wet or the feeling of being dirty. So she starting telling me "potty potty" and before we realized it, she was going! We were like WOO HOO!!!! Now she is doing great. She has to wear pull-ups at night cause she can't wake herself up to go pee. But she is doing great!