Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Piece of Junk.

Wish we hadn't ever wasted our money on this vacuum, or at least had had the sense to return it when the electrostatic "self cleaning" (what a joke) duster didn't work from the time we took it out of the box. It seemed to have such great suction at first though, that we decided to overlook the rediculous duster thing. It gradually lost suction though until, finally it acctually blows the dirt back out and leaves the carpet a bigger mess than when we started vacuuming. It goes through belts every few weeks because the design makes the belt get extremely hot after a very short time of vacuuming. We haven't ever had to change the heppa filter on the side because no dirt gets past the filter on the top. That sounds like a good thing except that it's not getting to the dust bin either. It just cloggs in the the first filter until the dirt starts coming back out. This vacuum is worthless.