Drinkwell Replacement Charcoal Filters keep your pet's water tasting clean and fresh. Each filter features a duo-density polyester pad that catches hair and debris, while the charcoal removes bad tastes and odors from the water making it more appealing to drink. Filters help extend the life of your fountain and pump and should be replaced every 2 to 4 weeks. Compatible with most Drinkwell fountains.

Key Features:
-Catches hair and debris
-Removes bad tastes and odors from water
-Extends the life of your fountain
-Change every 2-4 weeks to maintain water freshness

Features:
Compatible with Drinkwell Original, Platinum, Big Dog, Multi-Tier, Outdoor Dog, Mini, Everflow, and Zen fountains