You don’t have bugs eating your plants?
Of course there are plenty of other things you can do, but if you have strong, healthy plants, you often don't have to do much. Birds and other larger animals however, can be a much bigger problem depending on your crop.
I tried neem and diatomaceous earth against the hoppers. Different mechanisms of action, not total control but good enough for root crops like potatoes. The pumpkins and other squashes also hold up well.
> not all crops are seriously affected
Crop diversity is the key, and a life saver when the pressure is on, or when things just don't go as planned for whatever reason!
I don't get terrible grasshopper pressure in my location, but a friend does and uses Nolo Bait as part of her management.