It’s pretty easy to clean as the tank detaches from the shell of the unit. Turning it over, the tank has an opening on the bottom, which is large enough to get your hand inside to scrub it clean. We recommend first soaking the tank in a water and vinegar solution for 20 to 30 minutes before scrubbing it. This will disinfect and kill bacteria, and also loosen up any built-up dirt so it wipes off easily.