According to pet's drinking frequency and the number of pets, Replace filter every 2-4 weeks. Perfect Natural Material]It is made of 100% cotton and superior quality husk. consisting of activated carbon, ion exchange resin, and non-woven fabric 【Filter Size】Filter size: 3., 9 x 3., 9 x 0., 4in Sponge size: 1., 5 x 1., 1 x 1., 0in. 40pcs Dog Cat Water Fountain Sponges Filters Fits for 67/108/135oz Replacement For 67oz 95oz 135oz 24 Packs Cat Water Fountain Filters Replacement,Compatible Pet Fountain Filters 【Note】 Please soak 5 minutes foam filter before use. Product Summary: Cat Water Fountain Filters, 40 Pack Cat Replacement Filters for Stainless Steel 108oz/3.2L& 67oz/2L Adjustable Flow Pet Water, Dog Fountain Filter(20 20 Pack Effectively to filter hair, heavy metals. 【Triple Filtration System】 Composed of a cotton layer, activated carbon and an ion exchange resin.
