This humidifier filter stick is suited to users who need replacement wicks for compatible compact humidifiers. It supports regular home use in bedrooms, work areas, study spaces, and other indoor settings where a water-based mist device is used.Replace the cotton wick when mist output drops or the existing wick becomes discoloured after routine use. The 15-piece pack keeps spare humidifier sticks available for scheduled changes without storing bulky replacement parts.Each 3.93 in cotton wick is designed to absorb water and feed moisture toward the misting element. Compared with cutting generic cotton, a shaped diffuser cotton stick offers a neater fit and more consistent contact when the device is designed for this format. Confirm the holder length and spring arrangement before purchase, as compatibility can vary by model.Before fitting, switch off and unplug the device. Soak a dry wick with clean water, insert it fully, and follow the appliance instructions. Rinse the holder during routine cleaning, replace the wick as needed, and keep unused cotton filter sticks sealed and dry.