Why other communities chose not to spray


No significant difference in cases of West Nile virus in areas that spray compared to those that don't spray




Canadian Coaltion for Health and Environment - CCHE The Coalition encourages governments and the media to educate the public on safer approaches to dealing with mosquito-borne diseases.




The Alliance for Informed Mosquito Management (AIMM) AIMM is a national group of organizations seeking to protect the public and the environment from unnecessary exposure to hazardous pesticides used in the attempt to control mosquito-borne diseases. By working with communities, experts, and public officials, the Alliance informs about the hazards of mosquito pesticides and calls for the adoption of safer, least-toxic methods of managing mosquitoes and the threat of West Nile virus (WNV).




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Tri-Bullet Why Fort Worth has not sprayed for mosquitoes since 1991 Spraying for mosquitoes has one positive impact—a temporary reduction in the number of adult mosquitoes in the immediate vicinity. But similar to some medications, the toxins used in spraying may have side effects that generally outweigh the limited positive impacts.

Tri-Bullet Washington, D.C., Department of Health The District does not expect to spray for mosquitoes because of spraying low efficacy; kills off non-target species and poses potential health risks to a high population of persons affected with respiratory problems and compromised immune systems.

Killing mosquito larva and eliminating mosquito breeding sites appear to be the most effective measures in reducing the numbers of mosquitoes.

Research shows that larvaciding is far more effective in reducing mosquitoes than spraying over time.

Tri-Bullet City of Arlington, Texas has not sprayed for mosquitoes since the early 1990's because of the ineffectiveness of insecticide and the other negative impacts of this method of mosquito control. Spraying chemicals along the streets of Arlington will not rid the city of mosquitoes. In order for insecticide to kill adult mosquitoes the chemical actually has to make contact with the insect. This will do little to kill mosquitoes hiding in grass, bushes, trees, creeks, channels, and backyards. Most mosquito populations breed in residential backyards. Eliminating mosquitoes at their source by removing stagnant water, practicing personal protection, and larvaciding areas unable to be drained are the most effective ways of reducing the mosquito population.

Tri-Bullet Porter Council decides to forgo mosquito spraying Granat presented the results of her intensive five-day self education about the virus and pesticides on Internet sites of the Centers for Disease Control and Prevention, the Environmental Protection Agency and the Indiana Department of Health.

Councilman Mike Liebert said he had talked with two Illinois towns about their results with spraying. "It just doesn't work," he said.

Tri-Bullet Lyndurst, Ohio Adopts Landmark Law to Stop Pesticide Spraying for West Nile Virus In adopting the groundbreaking ban, the City Council pointed to other mosquito management methods that are known and accepted to be more effective. The Council stated, "[T]here is substantial belief that the more effective way of controlling the mosquito population is by larvacide treatment and thorough education of the City's residents regarding methods and procedures to minimize exposure to the virus." In adopting the ordinance, the Council found that "the risk/benefit analysis conducted by experts clearly indicates that the dangers of WNV are minimal and affect a very small segment of the population and that the long-term health and environmental risks of spraying with synthetic pesticides poses a much greater risk."

City of Murfreesboro The decision not to begin a spraying program is based on the advice of University of Tennessee Agricultural Extension Service experts who say such programs are ineffective and more cost prohibitive than other, more effective, options like public education and providing larvicides for public areas where standing water is a problem.

Spraying programs can adversely affect the health of small children and those with breathing problems, the service said at the time. Spraying also does not kill the larvae from which mosquitoes develop.
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