- Compatibility: This cat fountain filter is compatible with a variety of cat fountains. Please check the list of product images to confirm whether it is compatible with your cat fountain before purchase to avoid errors. - Function and filtration: The filter helps to clean the water and reduce bad odours. The pre-filter sponges retain hair and food residues, helping to keep the water clearer. - Triple filtration system: The carbon filter removes odours, softens the water, and improves the taste and quality of your pet's drinking water. The filter sponge catches pet hair, dirt, and food particles to provide pure and healthy water for your pet. - Material and health: Made of environmentally friendly materials, these pet drinking fountain filters help ensure water quality and provide healthy, pure water to protect your pet's health. - Why you need it: Keeps fountain water cleaner and more palatable, reduces odours, and helps manage hair and debris in the drinking water, supporting hydration and overall well‑being. - Use scenarios: - Daily use in single- or multi-cat homes to maintain clean, odour-free drinking water. - Rooms with high hair shedding where hair and food residues accumulate in the fountain. - Environments where improved taste and peace of mind about water quality support regular water intake for pets.