What parts of the Keurig K-Duo can I put in the dishwasher?

No parts are dishwasher safe. All removable parts including the carafe, carafe lid, water reservoir, reservoir lid, filter basket, and drip tray should be cleaned by hand with warm soapy water and rinsed thoroughly. Do not dry the inside of the water reservoir with a cloth, as lint may remain. (Page 4)