Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good marketing. Bad product

This humidifier is supposed to be mold free especially with the auto flush. The bottom line is that it is definitely not mold free. I installed it in a location that is very much out of the way based on the claim of mold free. I highly recommend that anyone who buys this, install it in a easily accessible location. This allows cleaning every 2-3 weeks which is probably what it needs along with the auto flush system. Bleach works very well in killing all of the mold.Since I have to clean anyway, I am going to use portable units that will be most effective in increasing humidity in the rooms that I am in.