Lancaster County Mosquito Spraying – 8/27/2019

The Lancaster County West Nile Program will be conducting a truck-mounted ultra-low volume (ULV) mosquito control operation to reduce high populations of mosquitoes capable of transmitting West Nile Virus on August 27, 2019 in parts of Lancaster City and Lancaster Township.

The treatments will be administered via truck-mounted equipment, spraying residential and recreational mosquito habitat. The equipment dispenses DeltAGard at a rate of 1.00 ounces per acre. This product is designed to provide quick, effective control of adult mosquito populations.

The application material has a very low toxicity profile to mammals and will have negligible impact to non-target insects and the environment.
Certain mosquito species carry the West Nile virus, which can cause humans to contract West Nile encephalitis, an infection that can result in an inflammation of the brain. According to the Pennsylvania Department of Health, all residents in areas where virus activity has been identified are at risk of contracting West Nile encephalitis.

Weather conditions and other unexpected events could delay or cancel this spray operation. If conditions do not allow application on August 27, 2019, the following evening will serve as the back-up spray date.

Contact Olivia Bingeman at or 717-277-5275 ext. 112 if you have any questions or concerns. Additional information can be found at