I bought this book because my 2 1/2 year old son loves Caillou and we were in the midst of potty training. It seems my son was having more accidents after we read the book--many times. He was even quoting from the book--"Oops didn't make it on time" and "I don't have to use the potty!" I think the book is cute and I like the colorful illustrations, but it seemed to make my son think it was ok to regress. We put it away and he is back on track!