Many U.S. cities have a rat problem. Besides freaking most people out, the rodents also devour food supplies or contaminate what they don't eat. Rats also spread harmful viruses and bacteria, and they can eat through almost any obstacle in pursuit of a meal or a safe haven to breed.
Seattle ranks high on the list of cities with a big rat problem. Households there are more than twice as likely to report rat sightings than the national average.
This segment aired on November 21, 2016.