I personally do not see anything wrong with locking the lightbulbs in the bathroom so they cannot be used so you can get some sleep. they are your lightbulbs afterall. have you removed all privileges from the children? all they have left is their beds, nothing on the walls even? taken all their clothes and given them sweatsuits to wear to school that they have to wash everyday so they have something clean? no phones or video games. feed them basic, no frills meals, none of their favorites, no snacks, no soda or treats. they get nothing at all until they start being respectful. you meet their basic needs. a bar of soap to clean with, no fancy bodywash or shampoos. they need a soft place to sleep, something to wear, and their nutritional needs met. there is no law that says they have to like what you provide. everything you give them what they like it is a privilege. let them earn it.