Auto Shocker ClO2 car interior odor eliminator Chlorine Dioxide car interior odor eliminator Remember if it doesnt say Biocide Systems on the product its not the powerful odor eliminating system you have come to know and trust to get the job done. Improves interior air quality Easy touse and will also clean out air ventilating system and filters. Just add water and let set for minimum of 2 hours to a maximum of 24 hours depending on severity of problem