The Four Horsemen are not going to go away anytime soon, your on the right track with education being your goal. Try hydrated lime on the plants that are being eaten off by the cut worms, it has to be dry, the dust clogs up the breathing holes on the worms sides and the lime over time is good for your soil's PH. Manure is acid, if you are growing organic, the high PH lime will even things out and kill the bugs. We shake the lime out of 3lb coffee cans with holes punched in the bottom. With cutworms, make sure they have to crawl through the lime to get to the plant's stalk, they will crawl no more...