Pack of 24 Foam Pre-Filters and Carbon Filter for PetSafe Drinkwell Fountain - for Sedona Fountains, Filter for Cat and Dog Water Fountain

For Drinkwell pet water fountains For Lotus pet fountains For Avalon pet fountains For Pagoda pet fountains. Extends the life and flow rate of the filtration pump. Provides your pet with cleaner, healthier water. Please replace the foam pre-filter and carbon filter every 2 to 4 weeks, depending on usage.