DD is just over 4 and can do it herself, but seems to prefer DH doing it (even if I am in there with her, she will call out for him). She is encouraged to do it herself at childcare, but they will check that she has done it properly - but that is only within the last 6 months, prior to that they would do it for her. At home we have the wet wipes and she bends and spreads to show us how clean it is on the few occasions she does it herself. Which is fine in the bathroom, not so good when she and her cousin are doing it through the doorway when we have people over......