I'm at my "wits end." My father in law refuses to listen and abide by the household rules. Since the death of my mother in law almost 4 years ago it has gotten worse. She use to do EVERYTHING for him. He has lived with us for 10 years. This is causing a strain on my marriage. We had an incident at home where I became very scared that there would be a fire. He used the microwave put two uncooked eggs in the microwave on a plate that is not for microwave use. I had put in cameras a week before this incident so I was able to catch the problem. He was told that he is not allowed to use the microwave anymore. He now knows that there are cameras watching him so now he "smirks" at the camera and uses the microwave anyway. This is just one incident out of many. He is combative, disruptive, disrespectful and at times obnoxious. What can I do? help!!!