Responsible cat owners are the problem. Responsible owners of anything are always the problem, no? ;)

On a more serious note, my animals are and always have been inside animals that go outside. I dont want them shitting in a box in my house, thank you. However, you should go outside with your pets or at least watch them because even well trained animals wander off at times.

Now, if these animals are such a problem, cook them. Lots of people in need of food around the world. Dont just kill them off, make use of them. o0