Wrok Well with PetSafe Drinkwell Pet Water Fountain Filters-- Our replacement carbon filters perfect for the PetSafe Drinkwell 1/2 Gallon, 1 Gallon, 2 Gallon, Butterfly, Avalon, Pagoda, Seascape, Sedona, Seaside and Creekside Pet Fountains. 360 Filtration System to Provide Healthy and Good Drinking Water for Your Pets-- The replacement pet water fountain filters is wrapped in high quality cotton, which helps filter out hair, large particles and debris, makes the water look clear and bright 60% more coconut shell activated carbon quickly removes yellowing and odors, as well as filtering out heavy metals, giving your pet healthy and fresh water. [ MULTIPLE FILTRATION ] - The pet fountain filter replacement is saturated filled with premium activated carbon and and non-woven fabric, fully isolate cat hair and food residue, remove impurities and particles, filter heavy metals and odors, soften tap water and obtain clean and fresh water for your pets. How to Use the Replacement Carbon Filters?-- First, soak for 5 minutes to remove carbon dust. Next, rinse it for 30 seconds before use. Finally, install it into the petsafe water fountain filter correctly. Please replace it within 2-4 weeks or sooner if you need. [ REGULAR REPLACEMENT ] - In order to ensure the health of your pets, please maintain the habit of changing the replacement filters for dog and cat water fountain every half month and the pre-filter foams every one month. Compatible with petsafe water fountain filters, compatible with drinkwell pet fountain parts, compatible with petsafe drinkwell replacement carbon filters, compatible with drink well replacement carbon filters.