The Drinkwell Premium Replacement Filters come in a convenient 3-Pack. The charcoal filter removes bad tastes and odors from the water, as well as large particles - giving your pet the freshest, cleanest water possible! The Drinkwell Premium Replacement Filters feature a 6 compartment plastic frame which allows for an even distribution of the charcoal throughout the filter maximizing filtration with every use. Should be changed every 2 to 4 weeks.
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