How long should children wear diapers?
It's different for all babies...there are signs to know when a baby is ready to potty train, for example: kneeling down while going to the bathroom, going off on their own to do their business, pulling at the front of their diaper after they go pee...things like that. You can also look up most signs on yahoo. But most are trained by 3.
untill they are about 3 years old...