Don't fill the water to the maximum fill line
Honestly I created a return for this product because I added water to the maximum fill line..added my oils and no mist. My Son poured out half of the water plugged it in and VOILA it worked, nice mist. The only downer for me is the mist level isn't adjustable, other than that it's great for a small room or larger room if you have a fan blowing to circulate the scent.
Rating: 4 stars