Cats would do the trick, too. Even more fun, issue pellet guns to all the local kids and send them out to hunt.
You can’t have a squad of cats brought there to kill the rats and then whistle for them to come back to their handler. And why would you subject cats to close proximity with these diseased vermin? Your cats would pick up fleas, ticks, and some very nasty diseases from them. If you mean dumping a bunch of feral cats there, that would just be plain cruel. What do they eat after the rats? And then, what about the fleas and diseases? They would not be brought to a vet to be treated. They would have no shelter, no homes. Turn a bunch of idiot kids out with pellet guns? That’s a sure recipe for disaster. The ERs in the area would be overrun with kids shot up with pellets, the area vets would be overrun with pets injured, too.