I've tried starter fluid, it does work on chicks. For me, snapping the neck or place it in bag, SMASH HARD against the concrete floor would kill the chick very very quickly. I've used the snap and smash method for twenty some years and it was not easy for me at first but the mindset has to be set in order to put the chick down. Do it quickly and do it surely with NO hesitation. If you hesitate, it gets harder and you won't have the mindset or the will to put an animal down or any animal down. If it bothers you very much to put an animal down and always require someone to do it for you and what happens if you don't have anyone and the animal suffers? At one time you will have to do it yourself.