Our four yr old grandson, holdshis poop. He is not constipated, but only wants to go at home. He is very close to his Papa and Gigi, his daycare giver, and aunt and uncle, but will not go in their homes.... Grandparents and other family members have taken him potty at his home with no issue....... He digs his heels in and refuses to go until he gets "home". The amazing thing is he does not have tooooo many accidents due to this. What can we do to help help him?