• Natural Material: The cat water fountain filters are made of 100% cotton and activated carbon particles, superior quality PET mesh husk. And resin and high-density sponge.
• Multi-Layer Filtration: The multiple filter system of this auto cat water bowls for indoor combines physical interception to filter out impurities and ensuring your cat and dog clean, safe, fresh drinking water.
• Recommendations For Use: Before using, please soak and rinse the cat water fountain filter with clean water, we recommend replacing the filter every 2-4 weeks.
• Multi use: This cat fountain filters can use with most stainless steel cat water fountain. Please check if it is compatible with your pet water fountain before purchasing to avoid that can't use.