KENEXP JO6281 Car-Home Smoke,Odor Remover Air Purifier, Silver Uses 8th generation technology to kill odor generating decomposers and nullify allergy triggers In cars/trucks/RVs, plug in 12v cigarette lighter socket and at home use the charger provided Filters air up to 99% by electrically charging (ionizing) air molecules In homes, use one purifier per 100 sq. feet room size to remove odors