PACKAGE INCLUDES: The package includes 24 packs of cat fountain filter replacements and 24 sponges. They are individually wrapped and sealed for convenient storage and daily use. Depending on your pet's drinking habits and the number of pets, we recommend cleaning the pet fountain filter once a week and replacing it 1 to 2 times per month to maintain fresh and clean water. PERFECT MATCH: The cat fountain filter measures 2.99 x 1.69 inches and the sponge measures 3.1 x 1.1 inches, making it compatible with most 67oz/2L, 101oz/3L, 108oz/3.2L, and 135oz/4.0L stainless steel pet fountains available on the market. Please verify compatibility with your pet fountain before purchase. EASY TO USE: These pet fountain filter replacements are easy to install and remove, saving time and effort. Soak the filter and sponge in water for at least 3 minutes to activate optimal filtration performance, and rinse thoroughly under running water. This helps keep your cat's water fresh for longer. TRIPLE FILTRATION SYSTEM: The cat water fountain filters are constructed with activated carbon, ion exchange resin, and non-woven fabric, creating a triple filtration system. This system helps remove impurities such as pet hair, food particles, and odors, while softening the water and improving its taste and overall quality to support your pet's health. RELIABLE MATERIALS AND SERVICE: The cat fountain filter replacements are made from safe materials that do not compromise your pet's health, providing peace of mind. We are committed to customer satisfaction and dedicated to delivering quality service. Color: White & Black Material: Cotton cloth Package Contents: 24 x Filters 24 x Sponges Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm. Only the above package content is included; other items are not part of this package.