Instruct: Classify an Amazon review as either positive or negative.
Query: The worst logitech mouse I have ever used

With the name Logitech, I thought the product would always be reliable (all of my keyboard, mice and computer speaker are from Logitech). I purchased the Keyboard + Mice combo (Logitech Cordless Desktop LX 310 Laser) in the hope that I could put aside the old wired mouse + keyboard. However, the mouse is extremely sloppy and disappointing. No matter how I set the mouse settings on my computer, the left click button always worked in a weird and insensitive manner. In the end I have to switch back to use the wired mouse. (Every time when I saw the wireless laser mouse sitting on my bookshelf I would have a try on it because I forgot what the problem was with this good looking device. But it always ended up with my angry after using it for 10 minutes)