Keep your pet safe and happy with the PRIMI PETS™ 8-Pack Pet Water Fountain Filters! Each filter is composed of a cotton layer, activated carbon, and an ion exchange resin, making it highly effective when filtering out hair and heavy metals which can make water unhealthy for consumption. Not only does this help ensure that you pet is getting the cleanest and freshest possible drinking water in their fountain, but it also encourages them to drink more water in order to reduce risk of urinary tract infections. These filters are compatible with our stainless steel 67oz/2L and faucet 108oz/3L adjustable flow pet fountain, so you can keep your pet's drinking fountain spick and span all the time. Get your 8-pack today to keep your pet healthy and hydrated!