I feel like a lot of people don’t realize that a Keurig needs extra care from what you see on the outside. I’m very happy with the 3 month brewer care kit to keep my machine working great and and for years to come. The kit includes a solution to help with build up from use. It also has filter replacement cartridges which are important to keep your beverage tasting the best it can. I definitely notice a difference if I have not changed my cartridge in a while and then put a new one in. This is a 3 month supply kit but if you don’t use your machine as much it will last longer.