The Xiaomi Smart Pet Food Feeder Desiccant Cartridge helps your Xiaomi Pet Food Feeder keep your pet's food fresh while locking in the nutrients to keep your pet healthy. Its high moisture absorption rate keeps moisture out of your pet food which in turn slows down oxidation while locking in freshness and nutrients. For additional protection, the desiccant cartridges are made from environmentally friendly materials to ensure your pets stay safe and healthy. The Xiaomi Smart Pet Food Desiccant Cartridge comes in a pack of 3 so you can replace it more than once whenever you need to.