Photographer: Mario Tama/Getty Images

These Are the Most Vermin-Filled Cities in the U.S.

Roach motels, mouse traps, and rat nests

Tampa, Fla., is among the roachiest big cities in America. Seattle may be the rattiest. Philadelphia has more mouse sightings per housing unit than any other U.S. city. These are some of the filthy highlights from the U.S. Census Bureau's biennial accounting of rat, mouse, and cockroach sightings across the country. The most recent numbers, collected in 2013, were released last month.

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