Instruct: Classify Amazon reviews into positive or negative sentiment
Query: useless

Yeap, this thing sucks. I only bought it because I thought I'd lost my Zircon. The Stanley beeps constantly when I drag it across any of my lightly textured walls and has about a 25% success rate of finding studs. Fortunately I found my Zircon, which has worked very well for about the past 8 years. But I wasted my money on this Stanley thing.