Easy to drive, easy to complete. The capacity seems a little just for a "full price" for use overnight. No worries if tank emptied fog during sleep, there is a stop automatic control and the unit waits. The fog does not wet the furniture fortunately. For the efficiency of the increase in humidity I have doubts, or my room is too dry or the hygrometer placed next was unreliable. In any case my nasal mucosa should be ultra dry, I have not felt an enormous and immediate benefit. The device seems powerful but for my use I think the unit should have more and be more powerful.