I'm still working on a big cleaning and I've finished cleaning two rooms so far. I couldn't get rid of all dust from an air-conditioner today but I am satisfied to some extent. Although I had been afraid that something creepy would come out from the back of a closet, I didn't find such things. I saw only a lot of cotton dust there. I was so relieved. A room I will start to clean tomorrow is nearly twice as large as the room I cleaned today. I think I have to make a good plan to clean the room as efficiently as possible.