Premium Charcoal Water Filter Replacement for PetSafe Drinkwell Pet Fountain Avalon & Pagoda, 24 Filters 24 premium charcoal water filters replace drinkwell water filters Compatible with Avalon and Pagoda Ceramic Pet Water Fountains Filters help catche hair and debris, while the charcoal removes bad tastes and odors from the water making it more appealing to drink Suggested to replace every 2 to 4 weeks. 2 Filters in a sealed bag to keep the good quality. Food graded activated charcoal granules.