6/8 pack Cat Water Fountain Filter Compatible with Catit, Replacement Compatibility for Catit Fountain Filters - Our Fountain Filter is only compatible with Catit Design Senses Fountain, Flower Fountain, Senses 2.0 and Fresh & Clear Stainless Steel (not compatible with Mini Fountain). Excellent Triple Filtration - The filters for cat water fountain are filled with premium fiber cotton, activated carbon, and ion exchange resin, providing triple-action filtration to isolate pet hair and food residue, remove impurities and particles, filter heavy metals and odors, soften tap water, and deliver clean and fresh water. Upgraded Structure with Denser Filter Cotton - Increased filter holes and expanded filter area allow faster and more thorough water filtration. Enhanced removal of impurities helps maintain clean and fresh water. Supports your cat's health - By reducing odors and impurities, helping minimize the risk of urinary tract issues, and softening minerals, these cat water fountain filters provide clean, fresh water to encourage hydration and support overall well-being. Regular Replacement Recommended - To minimize activated carbon dust, soak the replacement filter in water for 5–10 minutes and rinse thoroughly under running water before use. Replace every 1–2 weeks in summer and every 2–4 weeks in winter. For multi-cat households, more frequent replacements are advised.