We tried the 3 day stay at home underwear method this weekend and it actually worked!! I was determined to get Rena trained right after her 3rd birthday so she can move up to the 3 year class at school this summer. She started to use the potty at school but would never go at home. She always just seemd too busy playing and didn't mind having a soaking wet pull-up. So we tried the underwear method- day 1 she had 3 accidents, day 2 just one, and day 3 no accidents! We did leave for an hour or so each day and I put a pull-up on her but she stayed dry when we were out. DH took her to the park yesterday and she asked to go home since she had to pee!
Just wanted to share that this method worked for us since I know it's been mentioned on here. And I'm so glad my kid won't be going to kindergarten in pull-ups!!