I will start putting children on the toilet 2-3 times a day to help them practice when the parents tell me they are really working on it at home. In my opinion, at age 2 it is PRACTICE only and I insist on pullups or diapers at all times. When the children start to understand what's happening, for instance I have a 2 year old who always poops in the potty and she tells me she has to go, then I'm very diligent. But until the child really understands, it's practice.