Hornworms require their particular host plant to feed upon. Tobacco/tomato hornworms feed on plants within the Solanaceae family: tomatoes, tobacco, potatoes, eggplant, even petunias! I hand pluck them and toss them into the bird bath, where birds will find them and put them to 'good' use.

Taking them to the woods is probably a waste of a perfectly good caterpillar, though something will probably eat it.

Thank you for helping me.

You are most welcome.