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CHICAGO — There aren't many lists on which Chicago beats out New York City, but here's one: bedbugs.

For the fourth year in a row, Chicago tops the list of 50 Bed Bug Cities, according to pest control company Orkin.

The list ranks cities by the number of bedbug treatments Orkin serviced after detecting bedbugs from January through December last year.

New Yorkers better watch out, however, as the Big Apple is creeping up on Chicago, snagging a No. 4 ranking on the list and rising 14 notches from last year.

Los Angeles and Washington, D.C., ranked second and third on the list, respectively, and are among six cities that made a double-digit jump compared to 2014.

Dayton, Ohio, Louisville, Ky., and Sacramento, Calif., all dropped significantly in the past year to 27th, 29th and 45th, respectively.

Orkin reminded consumers that bedbugs are not necessarily a sign of uncleanliness. They have been found in upscale homes and hotels, movie theaters, schools and in public transit, the company said in a statement.

"Bedbugs are the great hitchhiker of the bug world, and they are very difficult to control without professional help," said Ron Harrison, an Orkin entomologist.