Ive got several moultries here on the place and dont seem to have any trouble except you have to run duracell batteries or any of the others go dead after a couple weeks, all were bought as clearance items at wal-mart over the yrs. and one I recieved as a gift, would cost too much to start replacing them now, as long as they perform I will still use them, some of the hunter I run into have to havr the newest one every year, had one guy say he was going to get the one with the satilite system so he could watch them on his TV at home, just a little more than I can efford to put into that aspect of deer hunting. Jim