The common rule of thumb is that there are eight or nine rats for every human being in New York City, which means a scurrying verminous population of 64-72 million lurking in walls, below streets, in trash cans, and sometimes in plain sight. Being a rat catcher or, better yet, a rat exterminator is a profession that will never end, and the NY Times spoke to some exterminators about the unwinnable battle.

Mr. Cruz, who started working as an exterminator in 1996, opened his business five years ago, and in his opinion, there is a difference between Manhattan and Brooklyn rodents. “Manhattan rats look like cats, not like rats,” Mr. Cruz said. “Brooklyn rats look like rats.” more ›