Maintaining the interior and giving extra attention to the exterior, ie, paint, is essential when it comes to the upkeep of your vehicle. Cleaning the seats, carpet, mats, doors, and dashes regularly not only provides the deep clean essential to reducing germs and odors it also aids in maintaining the value of the vehicle as it ages and depreciates in resale value. Consider treating your vehicle to a seat clean, and carpet clean at least every 90 days.