Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't Buy This If You Have Softened Water

We have a water softener due to our well water and the salt in the water really gets caked on this unit and all over the room. I would only recommend it if you have city water because it's a heck of a pain in the butt to clean if you don't. The lady who said to put a towel under it was absolutely right. The mist is very heavy and there's only one setting so you can't adjust it. It's also very loud. I bought a different one (same brand) with a wick and filter that is very quiet and has three settings for just 5 dollars more. Best of luck to those who can use a cool mist humidifier of this nature.