I got a set a few weeks ago. I didn't think they seemed to work very well and one day I forgot to turn them on. I really couldn't tell any difference. They are the cheap ones and I can't recall exactly what they are called but I got them from MidwayUSA and paid a little less than $30. Still, I would think they would do something. Should I talk to MidwayUSA, Caldwell or what are your suggestions?