My neighbor's 4 cats keep visiting my house. I notified him that his cats are constantly over here but he doesn't seem to care. I can't afford to care for them. My family has 5 cats of our own. My neighbor doesn't seem to care much about them. He's gone most of the time because of work. Three appear to be adult males and one is an adult female. They are a little wild, but not uncatchable. What should I do with them? Any suggestions?