(4 Pack) PetSafe Drinkwell Carbon Replacement Filter, Dog and Cat Water Fountain Filters (4 Packages each containing 3 Filters /

Compatible with PetSafe Drinkwell Original, Platinum, Big Dog, Multi-Tier, Outdoor Dog, Mini, Everflow and Zen Pet FountainsRemoves bad tastes and odors from the water, keeping it freshActivated carbon water filter made from coconut shellsChange every 2-4 weeks to maintain water freshnessPetSafe Drinkwell branded filters contain 50% more carbon than generic brands for better and longer-lasting filtrationFit securely in PetSafe Drinkwell fountains to more effectively filter water and debris