Instruct: Classify an Amazon review as either positive or negative.
Query: what a waste

We used the humidifier for approx three months. It only has two settings. The lower setting is useless; the higher setting is incredibly noisy, yet we had it run all night and it was not humidifying at all. We used it upstairs for an area of approx 500/600 sqft. We used the recommended anti-mold product but the smell was very strong. The filter was getting dirty so fast we had to change it very often, which makes maintenance expensive. It's bulky and heavy to move, yet made out of flimsy plastic.