"Vicks Soothing Menthol VapoPads® are uniquely designed to work with your Vicks humidifier to release soothing vapors. Each VapoPad is designed to release up to 8 hours of menthol vapors to enhance your humidification experience and to help provide added comfort. For use in the following Vicks models: V1200, V1300, VIH200, V150, V1700, V1750, V1800, V1900, VEV320, V3700, V3900, V4600, V5100, VUL520, VUL570, VUL575, V750, VWM845.
Not recommended for infants under 10 pounds. For children between 10-22 pounds, do not use more than 2 pads in a 24 hour period."