Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean a warm mist humidifier [title] Unplug your humidifier and let it cool. [step] 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.

Ending1: [title] Remove all detachable parts from your humidifier. [step] Gently remove any detachable parts of your humidifier for cleaning, so you can better access the water reservoir inside. Ending2: After that, you can use a diffuser to cool the humidifier down slowly but surely. [substeps] Most owners opt to let the humidifier cool down for a few hours prior to cleaning, if you work in a warmer climate. Ending3: [title] Remove and reattach the humidifier to the circuit. [step] Once you've let the humidifier cool down completely, remove it from the circuit. Ending4: [title] Remove and refill your humidifier. [step] You can find a small pipe cleaner in your machine.

Answer format: ending1/ending2/ending3/ending4