Home & Garden Home The 50 'Rattiest' Cities in America By Noel Kirkpatrick Writer Georgia State University Young Harris College Noel Kirkpatrick is an editor and writer based in Tacoma, Washington. He covers many topics including science and the environment. our editorial process Noel Kirkpatrick Updated October 18, 2017 Rats are a common sight in many human environments. Hung Chung Chih/Shutterstock Share Twitter Pinterest Email Home Pest Control Natural Cleaning DIY Family Green Living Thrift & Minimalism Sustainable Eating Regardless of where you live, you've likely seen at least one rat scurrying about. Be it through a barn in the country or away from an overstuffed trash bin on a city street, rats often set up shop alongside us humans. After all, we supply plenty of shelter and food for the rodents, so why wouldn't they follow us around? This is especially true once autumn begins, according to Orkin, the pest control company. As the temperature drops, rats (and mice) seek places to ride out fall and winter in relative comfort and safety. This means buildings, like skyscrapers and homes, can become dens for rats. Indeed, per the National Pest Management Association, some 20 million rats invade homes every year. "Rats and mice begin looking for warmer, more insulated places to get through the winter, and these too often happen to be our homes or businesses," said John Kane, entomologist and Technical Director of Orkin's Midwest Region. Since fall marks the start of rodent season, Orkin releases a list of the top 50 "rattiest" cities in the U.S. based on the number of rodent treatments — residential and commercial — they perform from September of one year to September of the next. Here are the cities that varmints favored between 2016 and 2017: ChicagoNew YorkLos AngelesSan Francisco-OaklandWashington, D.C.Philadelphia DetroitBaltimoreSeattle-TacomaDallas-Fort WorthDenverMinneapolis-St. PaulCleveland-Akron AtlantaBostonHartford-New HavenPortland, OregonMiami-Ft. LauderdaleIndianapolisHoustonMilwaukeePittsburghNew OrleansCincinnatiRichmond-PetersburgSacramento-StocktonKansas CityCharlotteNorfolk-Portsmouth-Newport NewsBuffaloColumbus, OhioSt. LouisRaleigh-DurhamGrand Rapids-KalamazooSan DiegoAlbany-SchenectadySan AntonioTampa-St. PetersburgRochester, New YorkNashvilleChampaign-Springfield-DecaturGreenville-SpartanburgMemphisPhoenixSyracuseWest Palm BeachOrlando-Daytona BeachMadisonFlint-SaginawGreen Bay-Appleton Chicago has had the dubious honor of being the top city for three years running, and New York has clung to the No. 2 spot like it's a slice of pizza. New Orleans and Cincinnati saw the most gains in their rat problem compared to last year, jumping 15 and 10 spots, respectively. Some cities have gotten better however. Raleigh–Durham dropped 11 notches from where it landed on the list last year, while Albany–Schenectady and West Palm Beach both fell 10 spots from the previous year. Perhaps in a sign that Orkin needs to step up its own game, the company's home city of Atlanta not only landed at No. 14 on the list this year, but it moved up two spots as well. It's just like that ancient Roman saying goes: Who watches the rat watchers?