Ive had 2 as a child and 4 as an adult. Only one of them has a penchant for it. He will go for it every opportunity he gets. It is dependent on personality, but flipping the TP around is a deterrent. In the bathroom he has access to I keep it in a cabinet.
I choose to do it in 2 bits unsigned integer binary 10 , 1, 0 , 11 ,10