20 Pieces Humidifier Cotton Sticks Filter Sticks Refill Sticks Filter Replacement Wicks for Humidifier Supplies, 7x135mm

Feature: 20 Pieces Humidifier Cotton Sticks Filter Sticks Refill Sticks Filter for Portable Personal USB Powered Humidifier ?Warm tip 1:?To see a better performance, we advise user to soak a filter stick to be wet completely before inserting to the humidifier. ?Warm tip 2:?We advise our customer to replace the filter after 3-4 months use (depending on usage and water quality). ?Warm tip 3:?Prolong the service life of diffuser: if the diffuser/humidifier is always complete-blocked or half-blocked, it will become hot and become broken easily, we highly recommend you to use water-solubility essential oil and clearwater. Specification: 1. Material: Cotton 2. Color: White 3. Size: 0.28(Diameter) x 5.31(Length)inch 4. Package Quantity: 20pcs