A dry sponge, such as those designed for kitchen use or for washing a car, is an excellent magnet for pet hair on upholstered furniture. Just rub the sponge across the furniture and pet hair clings to it like magic. All you have to do is wipe the hair off of the sponge and store the sponge with your cleaning supplies. One sponge will last a very long time. Keep the sponge easily accessible for a quick cleaning when unexpected company arrives.