Compatibility: Exclusively designed for our DCIOGAT 118oz/3.5L smart cat water fountain. Product Details: Includes 6 carbon filters and 6 sponge filters. Made of high-density sponge filter, activated carbon and ion exchange resin to build a perfect filtration system. Efficient Filtration System: Equipped with a multi-stage filtration system, it can effectively remove impurities, bad tastes and odors from the water, providing your cat with clean and fresh drinking water. Tips for Care and Usage: It is recommended that the filter be cleaned once a week and replaced every 2 weeks to maintain filtration. Please soak or rinse it in cleaning water for 5 minutes before use and the filter should be installed with the white side up. The cat fountain filters ensures that not only is the water fountain easy to use and maintain, but it also offers a reliable and safe solution for keeping your cat hydrated with clean water. With its high-quality construction, the activated carbon layer helps eliminate bad odors and tastes, providing a refreshing and enticing water source that will encourage your pet proper hydration habits. These filters are easy to install, simply needing to be replaced every 2-4 weeks depending on usage and water quality.