Trump Signs Executive Order to Reduce Mosquito and Tick Populations in D.C.

On September 30, 2026, President Donald Trump signed an executive order aimed at significantly reducing the populations of mosquitoes and ticks in Washington, D.C. The order directs federal agencies to collaborate with local officials to decrease the mosquito population by 90% and cut the tick population in half by the year 2028. Federal health and environmental officials are required to submit a plan to the President within two months to develop and implement advanced control technologies for these pests on federal property in D.C. Potential methods mentioned in the order include safe genetic modification, the use of beneficial bacteria, and the cleaning of breeding grounds for mosquitoes and ticks. The order states that traditional pest control methods have primarily relied on conventional pesticides, but emphasizes the need for non-chemical, technology-enabled measures to mitigate the negative effects of these pests, thereby enhancing outdoor enjoyment for residents. According to the Centers for Disease Control and Prevention, the Northeast experienced the highest weekly rates of emergency room visits for tick bites since 2017 at the start of tick season in April. D.C. Council member Christina Henderson commented on the order, describing it as 'random and yet timely,' noting her recent discussions about mosquitoes and treatment strategies in the District. D.C. Health is responsible for mosquito mitigation efforts, including the treatment of standing water in public areas, but does not oversee private properties. In March, residents of Capitol Hill formed the Itty Bitty Mosquito Population Committee to address mosquito issues in their neighborhood. The office of Mayor Muriel Bowser directed requests for comment to D.C. Health, which had not responded before publication.