how to kill big green caterpillars in garden

every one say that they have big caterpillar eating there tomate up well i have a new tip for you will my mom dad told her to put the caterpillar in a bottle of gas because what happen is bottle of gas will kill the caterpillar, my mom dad is one of the old timer gardener forevery he garden when is was little boy with his dad and mom now it pass on to his grandkid now all of garden tip and flowers too.