How many garden owners also I have been terrorized by cydalima perspectalis. After extensive analysis of the topic How do I choose the biologically sensible way of the animals (and other insects also) does not kill them but spoils the Apetit at Buchs. I am the plague not completely got rid of, but I still had success with the spray. Meanwhile my boxwood looks green again from, drives new leaves also previously completely bare eaten bodies, and thus appears to have survived the ko. What I did: First I went the last five weeks once a week with a strong vacuum cleaner (industrial vacuum cleaners) by boxwood and have the place infested sucked extensively. In between, I always check whether new jobs are affected. These points, I then usually stripped by hand and thus probably also caught one way or another caterpillar. Then I have all the plants sprayed book extensively in my garden with the Neem oil in accordance with instructions. For this year, the threat seems to have survived. How does that developed next year, we'll see. I give this product 5 stars, because all my book plants have survived the summer.