DuPont™ Air & Water Filters contain performance boosting technology that help the filters do more for you. These filters lead the way in built-in filter technology. DuPont™ Air Filters contain Oguard™ an ingredient built into the filter media that help trap a broad spectrum of household odors. Many DuPont™ Air & Water Filters are protected by Microban® antimicrobial product protection that helps to prevent the growth of odor causing bacteria and mold on the surface of the filter to help the filter last longer. All of these technologies built-into DuPont™ Air & Water Filters are examples of state-of-the-art proprietary additives and processes to maximize the benefits of the filter.