Package Included - 10 carbon filters - 10 foam plugs - Refill up to 10 times; enough quantity to meet usage and replacement needs and provide your pets with clean drinking water Triple Filtration System - High performance cleaning filter consists of a cotton layer, activated carbon, and ion exchange resin - Filters impurities, pet hair, sediment and dirt; softens tap water - Reducing contaminants supports your furry friend's kidney health Quality Materials - Each cat fountain filter is made of activated carbon, ion exchange resin, and non-woven fabric to eliminate bad taste and odors and keep the water fresh Easy to Install - Replacement filter elements are compatible with wireless cat water fountains - About 5 seconds to remove the old filter and replace it with a new one - The filter simply fits over the water tank and is easy to remove for cleaning Use Scenarios - Scenario 1: Ideal for households with multiple cats or high daily water usage; ensures a steady supply of clean, filtered water - Scenario 2: Suitable for homes with hard or mineral-rich tap water; filtration and ion exchange resin help soften and improve taste - Scenario 3: Quick maintenance and routine replacement during cleaning or refilling; simple swap-in in moments