Mosquito spraying set for Franklin Co.

October 08, 2007

CHAMBERSBURG, Pa. - Weather conditions permitting, spraying to control adult mosquito populations will take place on Tuesday and Wednesday evenings in portions of Hamilton and Greene townships.

Samples taken from this area by the Franklin County Penn State Cooperative Extension and the Department of Environmental Protection have shown mosquito populations that are in excess of established thresholds and have tested positive for the West Nile Virus.

Truck mounted, ultra-low volume spraying equipment will be used to apply Biomist 3+15, a pyrethrin product, for the treatment. The insecticide is applied in concentrations significantly below what someone would use spraying a commercial insect control product in their home. The spray will be conducted by the Franklin County West Nile Program.

Certain species of mosquitoes carry West Nile virus, which, when transmitted to people, can cause West Nile encephalitis, an infection that can result in an inflammation of the brain. According to the Centers for Disease Control and Prevention, all residents of areas where virus activity has been identified are at risk of getting West Nile encephalitis.


As of last Friday, there have been seven samples of Culex mosquitoes that have tested positive for the West Nile Virus throughout the county, according to a news release from the county's West Nile Program.

The samples have been found in the following locations: two in Washington Township, one in Lurgan Township, two in Hamilton Township, one in Greene Township and one in the Borough of Greencastle, according to the release.

There have been five confirmed human cases in the state so far this year, none in Franklin County. Throughout the state, there have been a total of 211 mosquito samples that have tested positive, and 9 bird samples.

There are things every individual can do around the home to help eliminate mosquito-breeding areas. Some of these tips include:

· Dispose of tin cans, plastic containers, ceramic pots or similar water-holding containers that have collected on your property.

· Pay attention to discarded tires. Stagnant water in tires are where most mosquitoes breed.

· Drill holes in the bottom of recycling containers left outdoors.

· Have clogged roof gutters cleaned every year, particularly if the leaves from surrounding trees have a tendency to plug up the drains. Roof gutters can produce millions of mosquitoes each season.

· Turn over plastic wading pools when not in use. Stagnant water in a wading pool becomes a place for mosquitoes to breed.

· Turn over wheelbarrows and don't let water stagnate in birdbaths.

· Aerate ornamental pools or stock them with fish. Clean and chlorinate swimming pools not in use. A swimming pool left untended for a month can produce enough mosquitoes to result in neighborhood-wide complaints.

Mosquitoes might even breed in the water that collects on pool covers.

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