Lancaster City, Lancaster Township, and Manheim Township, Pa. (August 13th, 2025)
Residential and recreational areas in and around Hawthorne Ridge, Conestoga Memorial Park, Golden Triangle Shopping Center, Stauffer Park, N. Plum Street, 2nd Street, Coral Street, Lancaster Community Park, Full Circle Recycling on S. Prince Street, St. Mary’s Cemetery, Musser Park, New Holland Avenue, N. Shippen Street, E. Walnut Street, Riverview Burial Park, Riverside Avenue and E. Orange Street will be sprayed for adult mosquitoes beginning around sunset (8:00 pm) on August 14th.
Please keep in mind that the roads listed are for reference and other roads and areas in close proximity may be sprayed as well. We ask that residents remain inside while the spray is being conducted, though outside activities may resume 30 minutes after the spray. As a common courtesy we turn off the sprayer when passing by people, but this intermission in the application alters the drift of the product which disrupts a steady, even application and may be less effective. The spray will conclude by 10:45 pm.
High populations of adult mosquitoes that vector West Nile Virus to humans have been detected in these areas. Weather conditions and other unexpected events could delay or cancel the spray operation. If these operations are cancelled, they will be rescheduled for August 18th.
The Lancaster and Lebanon County Mosquito and Tick-Borne Disease Control Specialist and a Department of Environmental Protection biologist will be on site for the application. The Lancaster and Lebanon Mosquito-Borne Disease Program will be conducting this truck-mounted ultra-low volume (ULV) mosquito control operation using the Lancaster County truck under business license BU 9444, and the product used will be Aquaduet applied at a rate of 1.0 fluid oz/acre. This product is designed to provide quick knockdown and effective control of adult mosquitoes. The control event is performed by way of an Ultra-Low Volume Truck Mounted Spray. Our sprayer puts out the product in microscopic droplets (approximately a shot glass of product is applied over the distance of a football field). Because the droplets are so small, they degrade quickly and are only “potent” for roughly 20 minutes before they begin to degrade. Therefore, it is unable to adhere to vegetation/surfaces or leech into groundwater. This protects non-target species such as pollinators and aquatic life. Additionally, we specifically deploy this product after dusk when the target mosquito species is most active and pollinators are not. We understand the role pollinators play, and we want to ensure that we do them no harm while also protecting public health from potential mosquito-borne diseases.
Lancaster 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, unmaintained pools, or tarps. Something as small as a soda bottle cap filled with water can breed mosquitoes.
For more information, contact the Lancaster and Lebanon County Mosquito and Tick-Borne Disease Control Specialist, Lydia Mohn at 717-277-5275 or lydia.mohn@lccd.org.