Built-in double filtration, the safe filter has a great effect on refreshing water, making your pets healthier. With strong adsorption function, the activated carbon removes impurities and odors, allowing your pets to enjoy drinking water. PP cotton filters coarser debris such as hair and water deposits. Efficient and durable, 1 filter allows you to last compatible 2-3 weeks, but with the aim of better allowing your pets to drink clean water. It is recommended to do this in about 2 weeks, which can purify the water better and make the water more refreshing, providing tasty water compatible 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 becompatiblee use, then you can clean the fine toner produced during transportation to make it clean and delicious, to make your pet fall in love with drinking water. High Accuracy: This filter provides the best water quality compatible your dogs and cats with its unique design. The activated carbon filter absorbs impurities, keeping your fountain clean and new. No need to clean the fountain frequently, saving time and water.