CHAMBERSBURG, Pa. - Late tonight, Franklin County will become the only rural area of Pennsylvania to be aerially sprayed this year for mosquitoes capable of transmitting the West Nile virus.
A plane flying overhead from 9 p.m. until 1 a.m. Thursday will be misting Pyrocide 7396 over the boroughs of Chambersburg and Orrstown along with Lurgan, Southampton, Greene, Guilford, Hamilton and Letterkenny townships.
The mist stays in the air and kills mosquitoes on contact, according to the Pennsylvania Department of Environmental Protection.
"There's absolutely no risk to people," DEP spokeswoman Sandra Roderick said.
Franklin County was selected for the second aerial spraying of the year because it has the highest number of positive West Nile virus tests in 2006.
"We know there are a lot of mosquitoes down there," Roderick said. The DEP reports positive results in 24 mosquitoes, three sentinel chickens and one bird.