About the cydalima perspectalis and his fight against a lot of nonsense is written - but not by the previous speakers here at "Amazon". First: The Note, infested branches should be removed, is often nonsensical. If the gnawed branches still green shoots at the top have, leave absolutely! Thus, the still existing water circuit is not interrupted. With me also greatly eroded Socket have downright bombastic expelled after they were injected again thoroughly once in the fall and then in mid-April. I even venture the thesis: gnawed branches receive initially a growth spurt, as if they had been cut. Of course, only at subsequent consistent eradication of the corn borer. As test option: strong knock on the book. Rise the conscious white butterflies with black wing edges, then the catastrophe is here. When spraying in the spring, I have observed that it is not yet fully developed Zünslerschmetterlinge with transparent wings rose. That was the right (and last) moment to strike with Calypso and splashing. Calypso is not as odorless as the advertising claims. It keeps in the garden for 10-14 days a musty, almost milky smell, which is but to endure. And another practical Hint: Use a syringe, for example, of "Gloria", 5-liter jar, yellow. However, in the batteries (8xAA) powered version ("Auto Pump"). The container pumps with discreet buzz continues even on, (to produce the spray pressure) the extremely annoying pumps manually deleted. With a set of 8 AA batteries (cheaply at Aldi / Lidl) can be about 5-6 fillings, so 25-3o l spray - extremely practical. Conclusion: the war in Afghanistan can not be won, but probably the most against the cydalima perspectalis!