You can kill the rooster. We did.
I’m not going to prattle on about the process, because for all the books we’d read and advice we’d gotten from experienced friends, it was just as much of a pain in the ass as we expected. (For us, not him. He went quickly.) As usual, we have learned the hard way.
* I couldn’t resist that title, but I also can’t help pointing out that it’s one hell of a song.