We had mice in our house. I caught one in a trap and release plastic trap. I took it a mile away in the car. On the way, I felt maybe that wasn't the right thing to do. When I got to the woods, I put the trap on the ground and opened the door. Mousey wouldn't leave. I tipped the trap up and he/she ran out. On the way back, the words in my head are, you have just made mousey food for an owl or hawk.