Katie: For a joke, you mentioned covering the patio doors. You might should seriously think about having the patio doors tinted. We had the same problem with our front door and the morning sun. It just made the living room seem dusty even when it had just been dusted. We had our front door tinted a couple of weeks ago, and it has worked great; plus it should provide insulation from the heat of the sun. It cost us $100 to have the door tinted and took only about 30 minutes. It might keep you from working so hard when your floor is actually clean. - Cynthia