I found Grasshoppers among my neps before and they were muching on the leaves, so I caught them, killed them then fed them to my neps.
I have also very small preying Matis in my garden, they are there naturally not even sure how they got there because my garden is 15 feet above ground. My kids love playing with the matises. But recently I haven't seen them, plus they are too small though to go after grasshoppers.
Hopefully your grasshopper problem is only seasonal. I have been through grasshoppers and caterpillars last year.
TTFN
Arvin