My friend witnessed a wasp kill a cabbage moth caterpillar. After that she never destroyed any more wasp nests in her yard. She has had significantly less cabbage moths since doing this.
Interesting I just had 4 hanging baskets full of geraniums get destroyed in a month couldn't see anything on them not even aphids was baffled till I through them all in the bin today but pul the plants out first massive root checked plants nothing then I seen a caterpillar crawling in the soil I found 30 in 1 basket without looking there would have been more if I would have look tossed Al the soil plants everything in the bin done some research dam cabbage moth do these only eat at night I font have anything on my other 6 pertunia baskets thank god