You must have different raccoons than the ones we have around us.
Couple of summers ago I went out into the kitchen one morning to discover a raccoon hanging on the dog kennel panel that was secured beside the window. Silly thing had dogs barking on one side of the fence and not enough sense to...
Will he come back is a moot point. When he comes back is probably a given.
I agree with both responses. A lead injection at high speed with anything above and including a 9mm dose will do the trick. If you are not into extreme prejudice in such situations, try a live, havaheart trap baited...