The caterpillars absorb toxins from the box tree so that birds etc that would usually take them find them unpalatable, although locally another moth-er says she has a robin taking them. I have been inundated with the moths this year, although I do not have box tree someone local must have. They come to the light trap and I also find them in the greenhouse for some reason. I drown them in a jam jar half filled with water and washing up liquid.
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