“Take them several miles away and release them. One Killometer limit? How will the authorities know where you caught an animal They don’t come with a tracking devise!”
If you drop them off less then 3-5 miles they will come back as often as not. I drove mine out 17 miles from the city of Austin to a creek and forest area we came to call “Possum Drop, Texas”. 19 possums, three coons. The last coon was a big, wily, angry old boar that was nearly the size of a sheep. For some treason catching him seemed to end the problem with all of them. Maybe he was just the smartest and the last to go. Man, he stank.
Just don't drive them to the NW of Austin. That would just transplant them close to my area and we already have more than enough.