Orkin has released a list of which cities it has trapped the most rats in. Interesting, except they don’t appear to have controlled for population or area. So, the biggest cities have the most rats, which doesn’t tell us much except that rats are present in cities. It would be more interesting to know how many rats are present per square mile or per 1,000 people per square mile. Which I suppose you could try to figure out from this data.

1. Chicago
2. New York
3. Los Angeles (+1)
4. San Francisco – Oakland (+1)
5. Washington, DC (-2)
6. Philadelphia (+1)
7. Detroit (+2)
8. Baltimore (-2)
9. Seattle – Tacoma
10. Dallas – Ft. Worth (+4)