For scent elimination just about anywhere, there’s the ZeroTrace Portable. This scent elimination unit is compatible with three power sources: standard outlets, USB ports and 12V vehicle plugs. We even sized it just right to take up residence in cup holders. The easy-to-use ZeroTrace Portable begins working instantly with a super quiet fan for odor removal that’s as safe as it is effective. This ZeroTrace device creates a constant flow of charged particles known as plasma ions. These electrically charged positive and negative ions naturally cling to airborne particles as air cycles through the unit. Through a bonding process, the ions render odor molecules and scent contaminants inert – all without the by-product of potentially harmful ozone.