Old enough to punish by way of work. Dishes, vacuum, sweep garage.
They do a half assed job, but it creates teenagers that will do it right the first time.
Besides, you gotta stop locking them in closets by the time they are 4. Could be working instead of sitting alone in the dark. Besides, by now at that age, they should have spent enough time alone in closets/dark basements/cages/etc that they should welcome any activity that involves lighting, natural or artificial.
So many bad parents these days, geez.
