Used in conjunction with ASFAWATER or ASFAWATER enhanced version, the car nano atomizer uses ultrasonic waves to decompose ASFAWATER into ultra-fine sprays, which can continuously and effectively reduce allergens in the air, remove odors, decompose harmful gases, kill bacteria and viruses, and reduce Chances of viral cross-infection. The product is suitable for use in compartments, shoe cabinets, toilets, kitchens and bedrooms (within about 100 square feet).