They don’t work anymore. I had one that produced a pile of dead mosquitos every night. I accidentally dropped it moving it across to other side of the yard. It never worked again. Bought another of exact same model from the same store. It didn’t attract bugs. None of them have ever since. That one that worked was apparently the last one that used a light that actually attracted bugs. People used to watch them because they were so effective, and they were damaging eyesight. So the light frequency changed to be less damaging, and now they no longer zap bugs because they don’t attract them anymore.