Where you planted tomatoes last year, try planting beans this year. When you rotate, insect pets and diseases have a harder time finding a suitable host. Avoid spraying in the heat of the day. Spray naturally-derived, environmentally friendly insecticides in the cool part of the day. Remember to spray the undersides of leaves too.
Many bugs eat other bugs.
Lizards, frogs, toads and birds also eat an enormous number of insects.