Well, we live in a condo on the ground floor. My son 2 years has recently started to climb out of his crib and wonders around. We have a front door which is inside of the building and another main door that leads to our patio that is also along a busy main road. We lock both locks on the doors every night just to be sure. He knows how to unlock the ones on the handle he's tall enough but can't reach the main locks yet.. Any suggestions of what kind of locks we could put up high so he won't be able to reach them??