(Portland, OR) -- Portland has been named one of the most rodent-infested cities in America, ranking 11th on Yelp's new list. The West Coast dominated the rankings, with Los Angeles and San Francisco taking the top two spots. Yelp says searches for "rodent" in Portland have surged as cooler weather drives rats indoors. The report urges residents to seal gaps, clear clutter, and schedule regular inspections to keep rodents out.