Earlier this month, the pest control company Orkin released a ranking of the top rattiest cities–the places that sent out the most rodent-elimination requests in the year 2013. Here are the top 10 winners:
San Francisco-Oakland-San Jose
Rats are well-suited to carry lots of different diseases that are harmful to humans. Hantavirus, the bubonic plague, and Leptospirosis (a disease causing liver damage) are just a few. Some research suggests that rat infestation problems could be worsened by climate change, as rats tend to breed in warmer and wetter weather. If rising sea levels mean increased flooding, that could mean more ideal habitats for rats to raise families.
Of course this is only counting rats with four legs or DC would likely rank at the top. Earlier this year, Baltimore ranked 3rd internationally for rats in an Animal Planet ranking.