anyone else find descaling humidifier harder than it looks?

not that bad once you know the steps. unplug it, empty the tank, fill with white vinegar (neat or half and half), leave about half an hour. scrub the base and anything you can reach with an old toothbrush, then rinse until it doesn't smell of vinegar. on an ultrasonic one the white crust on the little metal disc comes off with a soft brush - don't scrape it. using distilled water is what stops it scaling up again so fast.