Nosema locustae - A biological control for crickets and grasshoppers. It works the same way Bt works on caterpillars. It’s applied as a dry bait, the insects eat the material, get sick, and are cannibalized by their friends. Charming, isn’t it? But it works. Brand names include Nolo Bait, Grasshopper Attack, and Semispore. It is very effective on the young grasshoppers or nymphs but has questionable effectiveness on adult grasshoppers.