The top of the humidifier is removable and once it's removed you can then access the mist tube to clean it out. Here is a visual aid, below.
Please note that Step 1 needs to be done first. After that, in Step 2, you'll be able to quickly remove the mist nozzle.
If you have any further questions, please reach out to us by submitting a ticket or calling 1-657-275-3734 Monday through Friday 8 am PST to 5 pm PST.