Richard Drew, File/Associated Press
- New York City's new rat-killing method has wiped out rats on a strip in the Upper East Side.
- The carbon-monoxide method kills the rats, but doesn't address the underlying issues.
- Experts say it won't be enough on its own to take out New York's rats for good.
New York City has deployed a new method for killing rats that's so effective nearly every rat targeted with it has been eliminated — but that doesn't mean the city's notorious rat problem is solved for good.