Franklin County: Spraying expanded for adult mosquitoes


Franklin County has expanded its spraying effort to eradicate West Nile carrying adult mosquitoes. Spraying starts at around sunset Tuesday, Sept. 21 in residential and recreational areas in and around several Franklin County townships and communities.

Areas include Welty Road, North Welty Road, Washington Township Boulevard, Mentzer Gap Road and Old Forge Road in Washington Township; Welty Road in Waynesboro Borough; and Mickey Inn Road in Greene Township.

These areas tested positive for high populations of adult mosquitoes capable of transmitting West Nile Virus, as well as nuisance mosquitoes.

Weather conditions and other unexpected events could delay or cancel the spray operation.

The Pennsylvania Department of Environmental Protection’s Mosquito-Borne Disease Program will be conducting this truck-mounted ultra-low volume (ULV) mosquito control operation. Franklin County’s Mosquito and Tick Borne Disease Control Specialist will be on site for the application. Franklin County’s business license is BU 13939. The operation will use Deltagard applied at a rate of 0.75 oz/ac. This product provides quick knockdown and effective control of adult mosquitoes. 

To date, Franklin County has had 21 West Nile Virus-positive mosquito pools in 2021.

READ: Mosquito spraying: Residential, recreational areas are next

Positive pools

  • Chambersburg Borough (six),
  • Hamilton Township (three),
  • Greene Township (three), 
  • Guilford Township (four),
  • Washington Township (three),
  • Waynesboro Borough (one) and
  • Antrim Township (one).

Due to recent heavy rainfalls that have created mosquito larvae habitats, mosquito populations have a high likelihood of flourishing in the next few weeks.

This anticipated increase in mosquito population mixed with evidence of West Nile Virus increases the number of positive West Nile Virus mosquitoes. That increase is expected to continue until the first frost.

Now more than ever, Franklin County residents should protect themselves from mosquito bites by wearing or implementing some form of repellent, including wearing long sleeves and pants when outside. Additionally, residents and homeowners should be vigilant of standing water, including artificial containers holding water such as buckets, clogged gutters or tarps. Something as small as a soda bottle cap filled with water can breed mosquitoes.

For more information, contact Franklin County Mosquito and Tick Borne Disease Control Specialist Jason Goetz at 717-261-3855 or–



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