You can use a lethal body-grip trap that will snap its neck, or you can shoot it. NEVER EVER attempt to poison a raccoon - I know from experience that it either won't work, or you'll wind up with bigger problems on your hands. If you've caught the animal in a cage trap and want to euthanize it, a CO2 chamber is best.
Where is the best place to shoot a raccoon?
chest kill zone
Should you kill trapped raccoons?
If you've caught the animal in a cage trap and want to euthanize it, a CO2 chamber is best. Since you probably don't own one, shoot it. Please do not drown the animal - that's a cruel redneck move. It's usually easier to trap a raccoon in a cage than outright kill it.
What to do if you catch a raccoon in a trap?
You can release your raccoon from the trap with the back door. You can stand behind your trap before you lift the door up. Slowly back off and the raccoon will run away as fast as possible. It is almost the same as if you are releasing a cat.