remember that it is permissable, and sounds like recommended, for you to establish rules of behavior for people in your own home. while you may not be able to intercede in other areas/homes, you can establish expectations for behaviour in your territory and follow thru if those behaviors aren't met. Can you identify a time-out area of your house where you can send those who don't follow the 'rules'? Or have rewards available for good behavior? maybe by setting an example for what can be done you'll make a difference...good luck