Rats at the KFC/Taco Bell in New York

seeing the moving footage of Rats invading the KFC/Taco bell at a New York city Resteraunt was just sick. the trip out thing is that the Resteraunt had just been inspected&given a passing mark. the Rats were all over this place. they were having a field day on the floors&all over the place. the importance of checking everything out is so important. this is a Heck of a way to be greeted where it is all captured for all to see. how does a place of Business protect itself from such a invasion as this?