Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It doesn't work!

Does this product sound to good to be true? That's because it is. A completely frustrating piece of !#$%*. I have tried the product several times and have changed the filter (more $!) and still find it leaves plenty of water on the surface with associated water marks. It also does not save any time as the dry process (which does not work) is as slow as conventional drying.Finally, why spend the extra pain and time of returning this? They want the reciept and the heavy thing costs money to ship. I just tossed mine in the trash and learned an expensive lesson.