I just wanted to share my opinion, I know many hate them and there's enough dislike topics for them, but I don't see why so I made a positive discussion.
like the dandelion we label a pest to lawns, but our lawns are unnatural unlike the dandelion which has a purpose. These moths have a purpose too and even for wasps or bird food. I just don't see why a tomato plant is so important to warrant killing, especially in my experience of never having a plant die from these caterpillars and I have grown a lot of tomatoes in my lifetime! Live and let live is the motto in my garden, we all need to cohabitate and share our planet.