VICKS FILTER-FREE COOL MIST HUMIDIFIER: This cool mist humidifier won't need replacement filters, and it's 1.2 gallon tank can give up to 30 hours of soothing mist. Vicks cool mist humidifier is quiet ...

$54.99 at Best Buy: The SPT Ultrasonic Cool Mist Humidifier has a 2-gallon tank and comes in white. With an automatic shut off feature, this humidifier can cover a room of up to 500 square feet. The ...

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