Mosquito Season is Here -- and These Cities Are Seeing the Biggest Swarms

Core Insights - Orkin's 2025 Top 50 Mosquito Cities List highlights Los Angeles as the top city for mosquito activity for the fourth consecutive year, with Detroit, Cleveland, and Denver making significant gains in the rankings [1][3][5] Summary by Category Mosquito Activity Rankings - The rankings are based on the number of new residential mosquito treatments performed by Orkin from April 2024 to March 2025 [2][4] - The top five cities for mosquito activity are Los Angeles, Chicago, New York, Atlanta, and Detroit, with Detroit making its first appearance in the top rankings [3][5] Geographic Trends - Northern cities like Detroit, Cleveland, and Denver are experiencing increased mosquito pressure as temperatures rise, indicating a shift in mosquito activity patterns [3][6] - California remains a significant area for mosquito activity, with five cities in the Top 50, including Los Angeles, San Francisco, Sacramento, San Diego, and Fresno [3][6] Health Implications - Mosquitoes pose a major health threat, responsible for over 600,000 malaria-related deaths annually and transmitting diseases such as West Nile virus and Zika virus [6] - Orkin emphasizes the importance of proactive mosquito control measures to safeguard public health [7] Community Initiatives - Orkin is launching the "Mosquitoes Don't Deserve a Drop" campaign in partnership with the American Red Cross, pledging to donate $25 for every mosquito control service purchased, up to$250,000 [7] - The campaign aims to maintain a healthy blood supply while encouraging homeowners to take preventive measures against mosquito-borne illnesses [7] Preventive Measures - Homeowners are encouraged to adopt simple preventive measures to reduce mosquito activity, summarized by the acronym BITE [8][11]