Go to a big chity like Chicago or New York.
Rats. Millions of them.
Here in the hinterlands we don’t see them much. Why? Cats, dogs, coyotes, hawks, eagles, and bored boys tend to thin them out.
I live in Chicago. Yes, there are probably more rats than people here. But at least they mostly stay in the sewers and only come out at night. The city constantly puts out bait but it’s a losing battle.
Lots of cats in the city, of course, but almost everyone keeps them as “indoor cats”, so they don’t help. We do have some hawks that have moved back in over the last 20 years or so, but they seem to prefer the squirrels and pigeons. Maybe we need owls to hunt the rats at night.
Where we are at the owls are some of the leading bunny and rodent killers. We came home one evening and an owl was on top of our mailbox tearing apart a large bunny.
Another time an owl moved in when we were having a problem with rodents and for the next few days we had to clear out piles of rodent pieces under the tree he favored so they wouldn't start to stink.
Rats. Millions of them.
And millions of rodents, too.