When I go goose hunting, there always seems to be some kid in the field next to me with one of the wing spinner decoys (not sure which one). But a lot of the time when geese come in, they'll fly right past me and go to him, same with ducks to. So I'm pretty sure they work, and I think I'm going to pick one up myself. But like h2ofwlr was saying, you have to turn them off or the geese flare. Happy Hunting.