Plastic cotton mesh: Filters out all sediment from tap water and carefully catches hair, debris, and dirt. Cotton filter for pet water dispenser: Activated carbon in the filter can remove bad and peculiar odors and keep the water clean and fresh. Pet health: Helps filter drinking water so our pets can drink safely and stay healthy. Size: 8 x 4.5 x 1.5 cm. Make sure you choose the right water dispenser. Cat fountain filter: Replace every 60 days, clean the water dispenser and filter every 2-4 weeks to keep the water fresh. Features: Cotton filter for pet water dispenser: Activated carbon in the filter can remove bad and peculiar odors and keep the water clean and fresh. Plastic cotton mesh: Filters out all sediment from tap water and carefully catches hair, debris, and dirt. Cat fountain filter: Replace every 60 days, clean the water dispenser and filter every 2-4 weeks to keep the water fresh. For pet health: Helps filter drinking water so our pets can drink safely and stay healthy.