Pet Water Dispenser Filter for Drinkwell Features: Widely Compatible: This filter is compatible with Drinkwell Original, Platinum, Big Dog, Multitier, Outdoor Dog, Mini, Everflow, and Zen Pet Fountains, helping extend the life of the water dispenser. Keep Water Fresh: The activated carbon water filter helps remove odors and malodors from pet drinking water. For optimal performance, replace the filter every 2 to 4 weeks. Efficient Filtration: Fine-grained charcoal particles increase surface contact with water, enhancing filtration effectiveness. Improve Health: Encouraging pets to drink clean, fresh water supports hydration, which is essential for overall health. Easy to Install: Simple installation process. Replace every 2 to 4 weeks for best results. Specifications: Compatible with: Drinkwell Original, Platinum, Big Dog, Multitier, Outdoor Dog, Mini, Everflow, and Zen Pet Fountains Includes: 12 x Filter