Built-in double filtration, the safe filter has a great effect on refreshing water, making your pets healthier. With a strong adsorption function, the activated carbon removes impurities and odors, allowing your petspet to enjoy drinking water. PP cotton filters coarser debris such as hair and water deposits. Effective and long-lasting, 1 filter lasts you for 2-3 weeks, but with the aim of better allowing your pets to drink clean water. It is recommended to do it in about 2 weeks, which can purify the water better and make the water morerefreshing, providing great tasting water for your dog or cat. Easy to use: this ceramic filter is easy to install on the Safe fountain. Please note that rinse the filter with water before use, then you can clean the fine toner produced when transporting to make it clean and delicious,so your pet will fall in love with drinking water. High Precision: This filter provides the best water quality for your dogs and cats thanks to its unique design. The