This is a test of commonsense. Complete the next sentence:

How to clean a warm mist humidifier
Unplug your humidifier and let it cool.
Before cleaning your humidifier, be sure to unplug it from the wall. If it's been running, let the humidifier cool down until it is completely cool to the touch.
Remove all detachable parts from your humidifier. Gently remove any detachable parts of your humidifier for cleaning, so you can better access the water reservoir inside.