The Vicks Warm Mist Humidifier has pure warm mist action for relief of Clod & Flu symptoms. This humidifier boils water to a pure steam vapor that is up to 96% bacteria free. This mixes with dry air in the cooling chamber to release warm moist air into the room. It now includes a scent pad for the ability to be used with Vicks VaporPads or VaporSteam. Features include: 2 Comfort Zones, Large tank runs up to 24 hrs per filling; Auto shut-off for added safety; 2 Gallon output per day; Easy to clean; Uses VSP-19, WP-6 or VBR-5 replacement VaporPads; White/Blue; 3 Year Warranty.