Have you tried a spray containing neem oil on your tomatoes? It is an organic spray that acts as an insecticide, fungicide and miticide. It works wonders for me. You can also mix some liquid calcium in every 2-3 weeks to assist in holding blooms and prevent blossom end rot.
I think I'm going to have to try something else on the little 3/4" caterpillar things that are just defoliating my zucchini and cantaloupe. They get on the back side of the leaf, fold it over to make a little pocket, and close it up with a silk looking material. I'm thinking maybe a MAAP torch.