Is there a natural predator to them?
The key for gardeners is to recognize the infants and juveniles of the stink bug, which will cluster together for some time before they mature. They can be black & white or grey, or other colors, and they look nothing like the adults. They are easier to kill when very young.
Gardeners should look them up and recognize all stages, in order to protect the bounty.
I have a garden in the south and this is the first I’ve heard of them. I live in Georgia.