Innofresh® Auto odor eliminator utilizes activated carbon to eliminate odors and is completely fragrance free. No more worrying about irritating fragrances that just cover up problem odors. Instead, eliminate the odors from smoke, pets and food spills in your car, RV., truck and boat. Just clip on, hang or place anywhere in car and trunk. Superior odor absorption with no carbon black powder or spills. No longer worry about gels and oils that may cause irritation to pets and may harm fabric and leather surfaces.