I like the chickens idea, lol. I really would love to have fancy chickens, a nice rooster to drive my neighbors mad. Our county changed the ordinances last year allowing them.
I have never dealt with grasshoppers, but we have other buggies that like to eat leaves. Finally found a good systemic fertilizer/pest control for roses. I'll look at the name on the bottle in the morning and post it for you. It controls fungus too.
Sadly, I do not have roses anymore after my father severely pruned them last spring.