Instruct: Classify the given review into positive or negative sentiment.
Query: Great Idea High Voltage Swatter

PRO: this is a fantastic idea and actually works great, the kids leave the garage door open a lot and the garage fills up with fly. They tend to fly around is spots together so you don't even have to wait aim, just swing wildly a few times and you take most of them out.CON: Total FAIL on the battery freaking holder, once you put the batteries in then the battery door / cover does not close and latch so you have to hold the stupid thing all the way at the end where the door is to keep the freaking dam door closed or the batteries fly the hell out of the handle.Yet another great idea smashed by crappy engineering work.I would have gladly paid another buck or two per unit for the stupid battery holder to be properly designed. The engineer should be ASSHAMED OF HIM/HER SELF!I bought three of these and ALL THREE HAVE THE SAME PROBLEM!