Water Filter Replacement for Petsafe Drinkwell fountain Avalon & Pagoda, 12 Filters Water filters compatible with Petsafe Drinkwell Avalon and Pagoda Ceramic Water drinking Fountains Suggested to replace every 2 to 4 weeks. Filters sealed in polybag to maintain the good quality A pack of 12 filters included 100% customer satisfaction guaranteed. Quality meets or exceeds leading national brands.