Jerilee, you may want to try some pepper sprays or other organic sprays made from essential oils (like neem oil) that repel pests. Also there are bugs that you can purchase to put in your garden that feed on the harmful bugs. I am talking in generalities so that you can use your own flexibility to pick and choose what you want to use. I am an organic farmer who have farmed since my childhood. The fun part of farming, that is gardening, is dealing with these issues. With the big green "cutting worms" that you see on your tomato leaves, be aggressive with them. Using you hands, pull them off the leaves and slam them against the ground, bursting them open. If this don't kill them, stomp on them, after slamming them to the ground. Sometimes farming is ugly work. I hate killing any creatures, because I love all plants and animals, large and small. But, if the eat your tomatoes up, you will have to go to the store to purchase tomatoes at a high cost to you.
Good question. Take care. Regards, Dr. Haddox