Once I realized that was infested my boxwood from cydalima perspectalis, I had to remedy the situation quickly. Because if these caterpillars are not eliminated, it looks really grim for the boxwood and you can dispose of the boxwood final. First I tried a vinegar-oil mixture and the way I have sorted out some caterpillars by hand, but unfortunately did not occur the desired effect, and then just had to be another means. Since the "Neudorff crawler free" means a biological preparation is and as it does not harm other beneficial organisms, this was a good alternative. Was after the boxwood with the concentrate (mixing on the package) is sprayed, there was no longer tracked. After a few days only dead caterpillars remains hung in boxwood and boxwood can recover. So I can free funds tracked by Neudorff only recommend!
