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No, not when used properly. The chemicals we use are approved by both the Environmental Protection Agency and the state Department of Agriculture and Forestry for control of insect pests. The chemicals can be harmful to some fish species such as koi and goldfish. For more information you can contact our department’s biologists or night spray supervisor.
The very small concentrations used, about .007 pounds per acre, will not cause adverse effects for most people. Persons who have severe allergies should avoid the spray however. And you shouldn’t run or follow behind the spray truck, as this would increase your exposure.
One area may get sprayed more often if we determine from our surveillance activities that either large numbers of mosquitoes are present, or that disease has been detected in that area in either bird, mosquito or human populations.
We spray in the evening because research has demonstrated that this the time when mosquito flight activity is greatest. It is much easier to kill mosquitoes by contact with the insecticides when they are flying.
You can contact our office and tell the Night Spray Supervisor your colony’s location. He will map that area specifically as a no spray zone.
Our entire compound is fenced and locked. The spray trucks are also kept in a locked bay at night.
The spray truck operations are typically run until 11 p.m.
Yes, but the spray truck driver may drive without the sprayer in operation so that he can position the unit in such a way to prevent a double application on your street. Also the spray cloud maybe hard to see because the spray consists of a number of very small droplets that are almost clear.