The guy writes on his blog:
UPDATE: The situation is even worse than imagined. It is a worst case scenario. At the park again on Wednesday night, I walked the perimeter and witnessed a guesstimate of 60 rats in the park running, playing, eating, hanging out, all above ground, without any concern. I have never seen anything like it in New York City, in such a public place.You know it's funny because just yesterday I was altercating with a *mom* a the town pool. She was insisting that Philadelphia was a dirtier, more rodent-infested city than NYC.