Enhance your air quality with our premium Replacement Humidifier Filter Sticks, specifically designed for USB-powered humidifiers, aroma diffusers, and mist makers. These 7x76mm cotton sponge sticks efficient water absorption and evaporation, providing a consistent and pleasant mist. Perfect for use in homes, offices, and other personal spaces, these filter sticks help maintain optimal humidity levels, improving air quality and comfort. Easy to install and replace, they are an essential accessory for your portable humidifier or diffuser.