My wife(66)goes over at 730am, 7days a wk to cook his 8 course breakfast he insist on . Then we r back daily at 530pm to fix his din. ALL he talks about is "his" rats in the attic and also "visiting" his day and night! We have had pest control out a number of times with NO rats found, nor any signs. We explain that there r "NO" rats, he goes "ballistic" and starts yelling, which he does daily about everything! He absolutely refuses to hear anything about assisted living and becomes "mean", not just about these subjects, but anything in his life! We are about at the end of our patience. We gave up retirement n Florida to come back and take care of her dad since she is an only child. What do we do with this "man"........we r at a decision time and need HELP??