Rats aren't just sitting around waiting to be shot. They're very cautious and often hard to spot. Where you can see them scurrying about there's often lots of

Rats aren't just sitting around waiting to be shot. They're very cautious and often hard to spot. Where you can see them scurrying about there's often lots of people and other distractions, equipment or other obstacles that would make shooting them impractical. I don't think the NYC subway crew would take too kindly to people shooting up their equipment to get rats.