At Grandparents:
He wears briefs and they are supposed to ask him to go toilet every 1/2h. When I was there in the afternoon, he usually has pee if he is asked to go toilet. But if we forget to ask, he will not say and he will go in his briefs.
At home,
In diapers, cos mummy has no time to clean up pee pee messes. But when he says that he wants to "poot poot" I will quickly bring him to the potty and he goes in there. And he's really cute, he'll go "Tada!" when he sees the poop in the potty. haha!! And then he'll ask for a star for his "Kieran is a Good Boy" chart! :D