To empty the dust cup, first remove it from the vacuum by pressing the dust cup release button on the top of the canister and lifting off the dust cup. Next, hold the dust cup over the trash and press the bottom door release button on the front of the unit. Tap gently to empty contents. Press the door shut again until it clicks. If needed, press the top door release button and remove the fluff screen to clean. Tap gently to remove contents or wipe clean with a soft cloth. Remember to replace the fluff screen back in the dust cup after emptying. The dust cup should be emptied each time you vacuum and when the dust cup appears full or for optimal performance, when it reaches the max fill line.