OK, somehow or other, we've had an issue with a feral cat that has figured a way to get into and out of our house.
It wouldn't be so bad if it just ate the cat food, and used the litterbox (She does, most of the time, but there are urine stains on the suspended ceiling in the basement), but she also corrupted our cats, luring a kitten into the ceiling, where it panicked, and needed to be rescued.
Well, I managed to capture it, harder than you think with a cat that is smart enough to avoid the touch plate on the have a heart trap, so we now have a cat is a large cage (about 1x1x1.5 meters), and quite frankly she (she has had at least two litters) is the scariest 6 pounds (dripping wet) that I have ever seen in my life.
She cannot remain around her as a feral cat (fleas, torturing our cats, pee in the ceiling), so our options are to tame it, or mail it to a farm in Norway, because without an ocean between us, she'll be back, just like the terminator.