I have nothing nice to say for raccoons. If they can catch your chickens they will sport kill, like a fox. They won't even eat them much, they'll kill 10+ and eat maybe half of one bird.
They can break in where you least expect, and they will be hungry for chickens sooner or later, regardless of cat food available.
They will reach through chicken wire and pull chickens through, I've had several dumb chickens walk right up to the coon on the edge of the run and let it mutilate their bodies through the small holes.
Hardware cloth is a MUST. I do not regret buying it, I put it everywhere. Over the windows, over the doors, over spots that look weak, all around the base of the run (I layer it).
Live trap with sardines have worked amazing for me, the smell is strong.
To me, humane is putting a bullet behind the head. It's instant. They live years of suffering, starving, fighting, so I feel I'm giving them a painless way out, plus a meal of tasty sardines beforehand.
I'm sure you mean you want them kept alive, and I don't have much tips for that. If you release it elsewhere it will be someone else's problem, it could kill their chickens and other pets.
I've never had luck "chasing them off". They'll just run and hide and come right back on your property as soon as you're out of sight.
I wish you good luck in keeping your chickens safe.