I've used one, There ok, Just takes forever to check the pictures. The program that comes with the plot watcher is suppost to stop at a pitcher when it picks up on movement. So it don't take so long to view all the pictures but the problem is that is a small weed blows in the wind the program will pick it up and stop at that picture. There a great tool if you don't mind watching your computer screen for a long time. I still have mine but haven't used it in 3 or 4 years. I'd buy a game camera with field scan, Then you can control when you are taking pictures. I have mine set up on a bean corn plot. I have it set to take pictures every ten minnits, Mine is also ste to take pictures 2 hours after sunrise and 2 hours before dark. And it will work at dusk and dawn. The plot watcher shuts down when its prime time for deer movement because it sences there is not enough light. Mine is the older version but I only got 2 weeks outta the batteries set a 5 seconds between pics. Hope this helps.