Based on a four-city sampling, apartment rental service calls Chicago the 'rat capital' of the nation

Norma Rios-Sierra says she’s become used to seeing rats scurrying in the alleys of her Logan Square neighborhood. Garbage cans – even tightly lidded ones – often bear holes where the pesky rodents likely gnawed to find a recent meal, she said.

“It’s part of living in a city,” she said. “Even during...