An old Hill Country rancher swears by flour to control grasshoppers. He says when you first see signs of little white bugs jumping ahead of your lawnmower (or walking in the grass) it's time to apply flour. He prefers self-rising, but I would assume any flour would do. Make sure the lawn is damp and the wind isn't blowing too hard. In about two weeks, you'll have to do it again to kill the new hatchlings.
No, I haven't tried it. If my neighbors don't also do it at the same time, the grasshoppers just fly over the fences. I have little wrens that work very hard to keep my garden free of too many pests.
