Are they small grasshoppers like the size of a dime? I live in Nj and I have them all over my potatoes but they don't seem to be doing any significant damage. I have cilantro dill and marigolds planted in and around my potatoes which I know has kept potatoe beetle in check( I still had to manually pick some off on an almost daily basis but no damage was done to my plants). I know this companion planting worked for potato beetle because I would often see wasps eating adult beetles right on the potato plants. So, I am thinking that the same is happening to the grasshoppers I have there. They are present but kept in check by wasps. Marigolds also worked for
tomato worm. My tomatoes last year were totally cover in tomato worms and not a single tomato was harmed(every tomato worm was completely covered in wasp cacoons). So if ou don't have marigolds in and around the garden then that would be a good start. I think I bought an entire tray for 8$ at my
local garden store.