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On the question of the Mazamazda method: the method is probably OK when you are fighting off hornets in an occupied area , like France, when you are attempting to eradicate whole area populations. To stop initial invasion it has to be a policy 'Identify, observe, track and totally destroy' to prevent primary nests converting to the larger secondaries and then producing founder queens for the next year.
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It's not a question of either or, it's a matter of using both in tandem. Tracking is not fool proof as the nests can be difficult to find and access. Any delay in finding nests risks foundress release. The Mazzamazda method targets the resident queen via trophallaxis at whatever stage of nest development. The sooner that the Mazzamazda method is deployed in the lifecycle of the hornet the greater its effectiveness will be because there will be fewer hornets in the trophallaxis chain meaning the queen will be more vulnerable earlier on. A single laced hornet at the beginning of the hawking phase may be enough to destroy the queen and colony and nip the problem in the bud. It doesn't stop other hornets being tagged and being tracked back at the same time. It's belt and braces.