Pixi Cat Water Fountain Filter 15 Filters Cat Water Filter Compatible with Catit Pixi 43717 Three-Layer Fountain Filtration System

【Compatibility】 This cat water fountain filter is compatible with the Catit Pixi 43717 and 43722 Pixi 2.5L cat water fountain. Please check the size and shape of your fountain filter model before purchasing to avoid any size issues.【Instructions for Use】: Thoroughly soak the cat water fountain filter in water before use, then gently connect it to the water dispenser. To ensure the cleanliness of your cat's drinking water, the filter should be replaced every 1-2 weeks in summer and 2-4 weeks in winter.