Brookstone (522532) 2 Gallon Humidifier

Cool mist humidifier uses an ultraviolet light to kill 99.999% of germs and 99.99% of spores for a healthful mist. This humidifier employs the same technology as hospitals to produce and emit a virtually germ-free mist—using ultraviolet (UV) light. With a 2-gallon tank, it runs up to 24 hours before needing a refill. Cool mist humidifier produces no white dust and features automatic humidity level control, an indicator light that shows when the UV bulb (included) requires replacement and automatic shutoff when empty. UV bulb lasts up to 2,000 hours.