My cham wont eat these horn worms, so now they are 3 or four inches long What can I do with them other than killing them?
put them in a container of dirt and they will dig down in there and pupate. Then they will hatch out into moths. I just had 4 hatch out and I think it took about three weeks? You could feed them to your chameleons if your chameleons are adults. They are a much smaller prey then a fullgrown hornworm. They look big cause of the wings, but the wings basically disintegrate when eaten.
Don't release hornworms or the moths - they are agricultural pests. If you can't use them, destroy them. This should be a strictly followed rule for any purchased (not wild caught) feeder insect.