【Triple Filtration】 The pet fountain filter is composed of a cotton layer,activated carbon and an ion exchange resin. It can filter hair and residue, absorb odors and soften water. Always keep the water fresh. pets can drink clean water and stay healthy.compatible with Orsda D60 100oz/3L stainless steel pet water fountain. 【Easy to use】 Filters need to be changed frequently for your pet's health.This pet filters is easy to install,remove and replace.So,Cleaning is a breeze 【Note】 Please rinse the filter thoroughly with water before use to remove the charcoal dust . Replace carbon& resin filter every week and foam filter every 1-2 weeks to ensure that the water is fresh and clean,and can also be adjusted depending on your pet's drinking frequency and number of pets 【Storage Advice】 The filter has a long storage life .Please keep the outside package intact when storing. It would be best if you stored it in a well-ventilated and dry place . 【Service】Please feel free to contact us if you have any questions about our products, We will strive to help! Filters fit for Zeepet cat water fountain 100oz/3L