Hi, my daughter started showing an interest at a very young age, (about 14 months) I let her sit when she wanted, but I never pushed the issue. Then at about 18-20 months she started crying and carrying on every time she messed her pull-up. So at 25 months I borrowed a book from the library called "Toilet training in less than a day" by Nathan Azrin and Richard Foxx. I thought it would be a bunch of nonsense, but I read it anyway. I liked it so much and believed it would work, maybe not in a day, but it did make sense, so I bought it. The next day we tried it, it's like a potty training boot camp. My daughter is so incredibly strong willed I was hesitiant about whether or not she would actually cooperate. With so many treats and rewards-just for that day though-she did really well. She went on the potty 4 times and had 4 accidents that day. The next day we went a little backwards. I was ready to give up, but we kept her in panties anyway. The following day she only had a couple accidents. We started on a Monday, and by that Thursday night she began a dry streak that lasted until Sunday afternoon. It's been four full months now and since that first week I can count the number of accidents on two hands. She was wet most nights before we trained, and now this is her first full week in panties over night. Her pull-up stayed dry most nights since we started, but there were still a few wet mornings. The main idea of this book is to teach them to teach a doll that wets how to use the potty. After they've taught the doll, it's time to start with them. They are allowed and encouraged as much to eat and drink as possible on the day of the boot camp, so make there more chances to have to use the potty. After they go on the potty chair it is there "responsibility" to dump the contents into the toilet, flush and resplace the bowl, wash their hands, and pull up and down their pants. When they have an accident it is also their "responsibility" to clean up the accident and to practice going from wherever they had the accident to the potty chair, pull down their pants sit down, stand up and pull their pants back up. It gives them a chance to really get used to getting to the potty in a hurry. I know this sounds harsh, but my daughter thought it was more of a game than anything. And after the results I've had, I would (and have) recommendit to anyone. I do home day care and I offered the book to one of my moms. Her daughter was in a diaper on a friday, and when she came on the following monday, she was in panties, and to this day has had one accident at my house. Anyway, sorry this is so lengthy good luck with the "Adventures in potty training."