I feel your pain, Annie. We have giant lubber grasshoppers in Florida that can do a lot of damage in short order. There's little you can do once they get full size, other than individually dispatching them, but there are insecticides that are effective when they are younger. Texas A&M has the scoop on grasshoppers and their control here:
Seems like they absolutely LOVE the NOLO, Annie. Over here at Pottsville, the Nolo absolutely had a festival when we applied it. They went even crazier. Must have been like crack to them. ha.
thank you, did it kill the grasshoppers Sue