Honeywell Cool Moisture Germ-Free Humidifier HCM-350 The Honeywell Cool Moisture Germ-Free Humidifier HCM-350 ($62, originally $77) uses UV technology to kill up to 99.9 percent of bacteria, mold, and fungus in the water tank, leaving cleaner air to breathe all night long. Image Source: walmart.com Honeywell Cool Moisture Germ-Free Humidifier HCM-350 $62 from walmart.com Buy Now