Controlling the adult mosquito population.
Northwest Mosquito Abatement District’s larval treatments are the most effective means of controlling mosquitoes. When adult populations or West Nile Virus activity crosses over an established threshold, the adult mosquito spray program is implemented. NWMAD only conducts the truck based adulticiding program after sunset or later, never during daylight hours.
Northwest Mosquito Abatement District will post which map sections will be adulticided after 2 pm on days we plan to spray, on the night spray schedule page. The decision of areas to be sprayed is based on adult mosquito collections, mosquitoes that may carry West Nile Virus and total mosquito population.
However there are more guidelines NWMAD has to follow in order to spray effectively. The weather plays an important factor in adulticiding efforts as the EPA has strict rules the district must follow in order to spray for adult mosquitoes. This includes wind speed, temperature, precipitation, and many others factors.
Product Labels
Below are the labels for the products that may be used by Northwest Mosquito Abatement District for adulticide.