Instruct: Classify Amazon reviews into positive or negative sentiment
Query: PIECEOF CRAP!!!!

This device might be tolerable if every scent didn't smell like pine sol. Also this thing is LOUD! and that blue light. I have no idea who thought of this but it is a terrible idea. You cannot turn off the top light so trying to sleep with it on is a waste of time. And even if you cover the top light you then would have to deal with the noise. This device really needs to be redesigned, it sucks.