BALTIMORE, MD — They're the uninvited guests at every picnic. The buzzing nuisance who arrives early and refuses to leave. We're talking of course about mosquitos, the flying bloodsuckers whose bites leave your skin irritated for days.

Worst of all, Baltimore was listed among the top cities across the United States impacted by mosquitos. In honor of World Mosquito Day, which occurred on Aug. 20, the pest control company Terminix released its annual list of the Top 50 Mosquito Cities.

Terminix determined the rankings by using service data across more than 300 company branches nationwide, and identified the cities where residents needed the highest number of mosquito services last year.

Baltimore ranked 9th worst in the country, behind Memphis and ahead of Chicago. Los Angeles earned the miserable honor of being the top city in the United States for needed mosquito services, followed by Dallas and Houston.

Here are the top 15 cities for mosquito services last year, according to Terminix

  1. Los Angeles, CA 
  2. Dallas-Fort Worth, TX 
  3. Houston, TX 
  4. New York, NY 
  5. Washington D.C. 
  6. Atlanta, GA 
  7. Philadelphia, PA 
  8. Memphis, TN 
  9. Baltimore, MD
  10. Chicago, IL 
  11. Miami, FL 
  12. San Francisco, CA 
  13. Boston, MA 
  14. Orlando, FL 
  15. Nashville, TN 

To help combat mosquitoes within the home, Terminix recommends the following:

  • Remove sources of standing water. 
  • Clean the gutters. 
  • Change water sources weekly. 
  • Replace outdoor lighting. 

To prevent mosquito bites — and those irritating red bumps that inevitably follow — the Center for Disease Control and Prevention suggests using insect repellents that contain DEET, picaridin, ir3535, lemon eucalyptus oil, para-menthane-diol or 2-undecanone. Other options include wearing long sleeves and pants or using air-conditioning or window and door screens.