Reporting
It's great that you are being
It's great that you are being proactive. You have to deter stink bugs before the population grows or there is not a lot that you can do. In early spring, you could set out traps in trees and bushes where emerging bugs will head to mate. (Google search for "rescue stink bug traps.) You can swipe all the egg masses from under the leaves into soapy water (wear gloves). You can spray insecticidal soup directly on any bugs you find. All the best!