How can I clean my mobile? Mobiles made of cardboard should only be dusted with a soft brush. Mobiles made of wood, aluminium or plastic can be wiped with a moist cloth with a few drops of mild dishwashing detergent. How long can my Mobile last? One person called us and said that they had inherited a Science Fiction Mobile from her grandmother who had had it for 30 years! In our home we have had the same mobile hanging for more than 20 years. Can my mobile hang outdoors? No. Since they are very sensitive to the simplest whiff of air hanging them outside is not recommendable. Will my mobile fade? In many of our mobiles we use plastic foil. This material is lightproof and easy to clean. Some other mobiles are made of cardboard. Even though we use the highest quality cardboard it will fade over the years. Red colors fade more than blue.