In order for your beloved Keurig brewer to provide you with the optimum coffee and tea flavor of all your favorite blends, its important to keep it clean and well-maintained. With the Urnex CleanCup cleaning system, your brewer has never been easier to maintain. Simply place the cup in the K-Cup dispenser of your brewing system, brew two cycles and then once more after removing the Urnex Clean Cup. Coffee brewer clean up made easy, so you can get back to what you love--brewing coffee! 5 Clean Cups/Box. Note: PLEASE NOTE URNEX CLEANCUP K-CUPS DO NOT WORK ON KEURIG 2.0 BREWER MODELS!