The Scarecrow is used to seeing “5 or 6” rats in his house every year. In fact, he got so tired of reloading the rat traps that he got traps with plastic cheese (for the plastic rats, I suppose). He doesn’t mind mice, which begs the question how does he protect the mice from his rat traps.
Everything in his basement is covered in rat droppings, he reports. Ew.
When the Black Plague breaks out in Tacoma, I have a good idea of where to look for patient zero.