17th West Nile virus-positive mosquito pool in Frisco to be treated with larvicide, sprayed

The city of Frisco will use larvicide and spray for mosquitoes after one mosquito pool tested positive for West Nile virus, according to a city news release.

A total of 17 Frisco mosquito pools have tested positive for the virus this year, and two human cases have been confirmed in the city.

Beginning Friday, the city will use larvicide to target remote areas of Cottonwood Creek Park.

Spraying will begin Saturday in off-road areas of the park.

Treatment will begin at 9 p.m. Saturday and will continue through 6 a.m. Sunday. Spraying resumes Sunday at 9 p.m. and continues through 6 a.m. Monday.

The city of Frisco supports precautionary steps promoted by the Texas Department of State Health Services, which are commonly referred to as “The Four D’s”:

  • drain all standing water;

  • dress in light-colored, long-sleeved clothing when outdoors;

  • DEET—use mosquito repellents that contain diethylmetatoluamide, or DEET; and

  • dusk or dawn—avoid outdoor activities during these hours when mosquitoes are most active.


More information is available from the city of Frisco’s Health and Food Safety Division of the Development Services Department at 972-292-5304 or by visiting www.friscotexas.gov/mosquitoes.