N.B.
I am copying and pasting my own reply to a similar question.....
Additional note...I offer one M&M when they are successful...not just for "trying" but for actually pee or poo. We do this for several weeks till I start "forgetting" and they do too....As explanation to my other daycare children...it is so-and-so's Potty Time right now (thats why they get a treat..it has to be special for so-and-so...only they get the treat)
Try the Lora Jenson ebook "3 day potty training method"
http://www.3daypottytraining.com/
I do home childcare and had a parent approach me last year with this for her then 28 mos old son who had never ever gone potty in a seat or toilet before. We decided to go for it..she was willing and I was willing to support the outcome of thier long weekend. She said it was like boot camp and she waged the war!
You toss ALL diapers or Pull ups (I hate those things)...so no crutches! You have meals ready, casseroles or frozen pizzas and waffles, etc. No errands to do or yardwork or big house cleaning. You stay a few feet from your child for the 3 days (some have needed 4). You DO NOT make your child sit on the toilet at timed intervals and you never ask them to go, but instead, remind them to tell you when they need to go..subtle difference. They learn to listen to their body, rather than a parent forcing them to go sit on the potty. Also, keep that potty seat in the bathroom! Where in the world can you go potty in a livingroom out in the real world???
In the last year I have had 5 children train this way over a 3-4 day weekend and I continue it here at my home childcare. (Please discuss with your childcare..support is needed as they will require assistance with pants and washing hands..and someone there to cue into there "signs" before they are very verbal about the "Gotta go Potty" part...its part of the process!) Most have gone back to diapers or pull ups at night only, but I use none for naps, etc. Some accidents happen, but very few really. My youngest was 22 mos, the oldest 29 mos. I have one who turned 2 yesterday (Sept 2) and his parents did this method over the last weekend (it was a 4 day weekend as I was closed for 2 days)...and hes in undies and has had one accident (a poo) in the last 3 days, including naps of 2-3 hours each day.
I refuse to have children any older than 30 mos not trained or attempting it here any longer when there are alternatives. Most of these kids had never gone in potty before and I try not to use a small seat any longer than needed and use the full size toilet. I need to help with pants and hand washing, but to me this is way better than all those diapers on big kids!
You can do it!!!