We are accustomed to closing our car windows all the time due to air conditioning and also prevention of polluted air from getting into our car. But is the air inside our car really clean? Biscuit crumbs, hair, wet food pad, etc, not only will produce bad smell, but it even breeds bacteria. Most people clean their car by using a simple vacuum cleaner, which only removes dust, but doesn’t have the functions of deodorizing, self-sanitizing and decomposition of toxic gases.