GardnClean Fast Release 10000 cu ft penetrates hard to reach areas such as microscopic openings on non-sealed materials, HVAC ducting, electrical components, and much more. Due to the very small size of the chlorine dioxide molecule, it can easily penetrate into all of these spaces to eradicate the source of VOCS (Volatile organic compounds), odors, and other compounds from deep within. Great to use in transportation, bathrooms, kitchens, offices, common areas and dwellings.