Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Zapper stays on when not holding down buttons

I bought this little contraption for my house to keep the flys away and I thought it was a good idea at the time. After killing a few flys one night I stored the zapper racket in a wodden drawer in my living room. The next day when I returned to use it again it had stained and slightly burned the inside of the drawer. The batteries were still in the machine but the buttons were not held down and the red light was not on. Needless to say I am thankful that my house didnt burn down. So now everytime I use this device I have to take out and put in the batteries everytime because it will stay on regardless. Very Dangerous!!! Beware!