My husband & I are caring for his mother as she has Alzheimer's disease, and is no longer able to live by herself. Last night when I got home from work, my husband told me the story of the battle of the thermostat! He kept putting signs up reminding my MIL not to turn the thermostat up, and she constantly took them down, and cranked up the heat. He covered the control box with aluminum foil, and put a sign over it. He tried everything to keep her from touching it, but to no avail. Finally, he lost it last night. lol He put a tupperware container over it, and nailed it to the wall, and put another sign over it. Five minutes later, he checked on it, and sure enough, she had ripped the sign down, and was trying to remove it , nails and all, with her bare hands! As of this morning, it is still in place, but the defiance of someone with Alzheimer's is amazing. They are truly child-like in their actions.