DHAO Replacement Filter for Cat/Dog Fountain Ion Exchange Resin-Round

Soften the Tap Water and Remove Odors, Keep the Water Tasting Fresh- The tripleaction filter contain 3 different compartments: the ion exchange resin softensthe tap water, the activated carbon removes odors and the cotton mesh filtersout any sediments the tap water might have.Replace Them within One to Two Weeks - Please replace the filters once a week,thus you are able to save money while taking good care of your cat. Yet, ifmultiple cats are using the fountain, more frequent replacement will benecessary.Not only the filters purify the tap water so that your cats always have safedrinking water, but also the better tasting water will encourage your cats todrink more, helping them replenish moisture and keep healthy.What's in the box4× Charcoal Filter