Since you live in the city, you may want to try a pellet rifle instead of a 22. They are quieter and have a shorter range. You can buy fairly powerful ones now. They won't kill larger animals, like a dog or coyote, but at short range they can kill an opossum. I killed a jack rabbit this fall , he was close - about 20 feet away. and Jacks are pretty large around here! We use our pellet rifle mostly for ground squirrels, range about 120 feet.