Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for a cool-mist humidifier

We've been using the Dragon shape humidifier for about six months now and I have no major complaints. It is quiet and has a decent capacity. The flow is very adjustable; from a tiny mist to a huge stream.I will say that the one thing I dislike about the cool mist humidifiers is how often you need to clean them. When refilling it, I smell for mold and also note any slime or buildup on the parts. It really needs to be cleaned about once a week. The white vinegar rinse and wipe method works ok, but this makes me miss our old evaporative humidifier (even though it scaled up and failed, and was an energy hog, it rarely needed any cleaning).