Instruct: Classify Amazon reviews into positive or negative sentiment
Query: wallet groomer

MANGROOMER Do-It-Yourself Electric Back Hair ShaverCan I give it zero stars? Cheaply made overall, and on mine the battery door wouldn't latch back in place, once removed.Hurts like blazes. I have a pretty good tolerance for pain and not particularly sensitive skin, but this thing is too painful to try to use.Ineffective. My body hair is thick and coarse, and the Mangroomer doesn't remove it at all; it feels like maybe it's trying to yank it out by the roots.Utterly worthless and a disappointment.