Ensure your cat's water fountain stays fresh and clean with these replacement filters. This set includes 6 filters and 6 sponges designed to fit most cat water fountains. The activated carbon filters help remove impurities and odors, while the ultra-fine fiber sponges trap hair and debris. Regularly replacing the filters and sponges is essential for maintaining a hygienic water source for your feline friend. Enjoy peace of mind knowing your cat has access to purified, flowing water at all times. Easy to install and change, these filters and sponges make fountain maintenance a breeze.