NORRISTOWN PA – Pesticide spraying to control the adult mosquito population is scheduled to occur Tuesday (Aug. 29, 2017) from 8-10 p.m. primarily in Lower Perkiomen Valley Park, adjacent to the north side of the Oaks exit of U.S. Route 422, the Montgomery County Health Department announced. Spraying will be done in selected areas where sampling has discovered mosquitoes that carry the West Nile Virus.
The night hours are planned because the park is expected to be empty of users. The department urged nearby residents to consider remaining indoors, closing windows, and turning off ventilation systems that draw in outside air during, and for at least 30 minutes after, the spray period. The work depends on the weather; an alternate spray date has already been set for Sept. 5 (Tuesday) at the same times.
Health department personnel will be responsible for the spraying. The department said it is working with appropriate agencies to identify, eliminate, or treat with larvacide areas where mosquitoes are breeding. Residents may contact the Health Department at 610-278-5117 if they are concerned about an area of standing water that may be a breeding area.
The adult mosquito control program will only be used in limited situations to reduce large numbers of adult mosquitoes. The department said it consulted with the state Department of Environmental Protection and Upper Providence Township officials before announcing the spraying plan.
Map from the county Health Department