Last summer I had a plague of grasshoppers, they literally hung off the house, the chainlink fence, ate everything and killed about half my landscaping. I had use Nolo bait as soon as I saw the baby grasshoppers. Didn't do squat. I had to cover whatever I wanted to keep w/ agribon cloth or shade net. I had only 12 chickens last year. This year I have had a average of 35+ chickens since early spring, and I occasionally see a grasshopper that is half grown. My chickens free range about 4 hours a day since it has gotten hot. In the spring it was more like 10-12 hours, letting one coop out at a time. I see very few bugs despite the drought.
I personally won't bother w/ Nolo bait again. It will attract the grasshoppers, and is not effective if the hoppers are large. If they eat it when small, it kills them. I was devastated last year when I couldn't control them. If you want really good bug control, try guineas, but they are really noisy. I am happy w/ the job the chickens have done.