After poison (Neonicotinamid) had availed nothing, and a vinegar-oil mixture had absolutely no effect, I have I perhaps to save the last leaves have these Bacillus thuringiensis tried, about as to how to cottage garden com recommended. Thanks for the tip!
As dosage I used 2 sachets to 5 liters of water, sprayed thoroughly on all bushes.
Once again a caterpillar shows I'll spray immediately. Since the moths fly at night in large Mangen is the probably take much longer.
Quite as fast as described it did not work, I had to let go of it all Hoffnunf scchon close, but now after a couple of days I find really no living caterpillar anymore, only black caterpillars residues unnd the first leaves sprout again.
The first glimmer of hope after months of desperate fighting, hundreds abgesammelten caterpillars and almost bare bushes.
Combined I have with neem Vital, aufgeschämmt in irrigation water to act more quickly, but the main effect certainly had the "caterpillar free".
Price / performance under the previous impression: Genial!