I got all four of my 2.5 year olds now 3 year olds on board this spring. I sent the parents this plan:
http://www.livinghealthymom.com/how-...ys-with-carob/

One chose this method the rest chose the 3 day method, I told them to start at home over holiday or any long weekend and then I would assist. It has been a long summer lol but we made it. I know how frustrating the accidents can be. I had one pee on my brand new couch

All we can do is continue to be there biggest cheerleaders and grin and bear it.

I just had a 3 year old start who isn't potty trained, you know who's going to have to get the ball rolling