Maintaining house cleaning Home environmental factor affects mood of family members. Living in a messy, dusty place in which insects, worms, and rats may live makes people sick. Thus, maintaining house clean and neat is important. keeping ventilation and brightness is a main idea of houses clear. Besides, family members ask oneself put goods back in an old place after used, and clean up each one part of house in each day in a week. More over, planting flowers or grass as well to increase green surroundings. Which makes oneself relax when staying at home.