MONCKS CORNER — Santee Cooper has begun its annual mosquito treatment for areas in Berkeley, Calhoun, Clarendon and Orangeburg counties that are near the Santee Cooper Lakes.

The state-owned utility typically sprays around 60,000 acres annually by truck for adult mosquito control and about 300 acres for larval control. The chemicals Santee Cooper uses in mosquito treatment are EPA-approved permethrin and resmethrin, which are sprayed by truck.

About 50 species of mosquito inhabit the area surrounding the Santee Cooper lakes. The prime season for mosquitoes begins as early as March and typically ends in November. Adult mosquitoes are most active 30 minutes before and after sunrise and 30 minutes before and after sunset.

“We use three main tactics to control mosquitoes,” said Vector Management Supervisor John Grant. “Larvacide is when we treat mosquitoes in their aquatic state, and adulticide is when we spray by truck or aerially. Eliminating their breeding sites is the most effective tactic. Mosquitoes often use sources of standing water as breeding grounds, and residents can decrease mosquito activity significantly by emptying potential breeding areas like birdbaths or pet water bowls.”

In Berkeley County, the following areas will be serviced: Angel’s Landing, Big Oak Campground, Black Oak Subdivision, Black’s Campground, Bonneau Park Subdivision, Cross Subdivision, Diversion Canal Subdivision, Dubois Extension Subdivision, Dubois Peninsula Subdivision, General Moultrie Subdivision Sections I and II, Halls Subdivision, Johnston Landing, Live Oak Subdivision, Overton Subdivision, Pinopolis, S&S Campground, Thornley Subdivision, Thornley Extension Subdivision and Thornley Forest Subdivisions Sections I and II.

In Calhoun County, the areas serviced will be Calhoun Subdivision, High Hill Subdivision, Low Falls Subdivision, Popular Creek Landing and Washington Point Subdivision.

In Clarendon County, the following areas will be serviced: Camp Bob Cooper, Canty Bay Subdivision, Church Branch Subdivision, Clark Subdivision, Cooper’s Landing, Davis Subdivision, W.B. Davis Subdivision, Elliott’s Landing, Frierson Subdivision, Gin Pond Subdivision, Goat Island, Goat Island Resort, Alex Harvin Landing, John C. Land III Landing, Francis Marion Subdivision, Polly’s Landing, Prince Subdivision, Prince Extension Sections II and III, Rowland Subdivision, Scarbough’s Landing, Taw Caw Campground, Taw Caw Landing, Taw Caw Subdivision, West Wyboo Subdivision, White Oak Subdivision Sections I, II and III and Wyboo Subdivision.

In Orangeburg County, the following areas will be serviced: Belvedere Subdivision, Belvedere Subdivisions Section II and III, Bluff Subdivision, Bluff View Subdivision, Eutaw Springs Subdivision, Ferguson’s Landing, Fountain Lake Subdivision, Fountain Subdivision, Mill Creek Campground, Mill Creek Subdivision, Red Bank Subdivisions Sections I and II, Santee State Park, Sinkler Subdivision, St. Julien Extension Subdivisions Sections I and II, and St. Julien Subdivision.

Santee Cooper leaseholders and residents of areas around lakes Marion and Moultrie can request mosquito services or check on the treatment schedule by visiting The site includes information about Santee Cooper’s vector management operations, links to additional information and a form that helps Santee Cooper target mosquito breeding sites and problem areas.

Mosquito control is one of the oldest programs at Santee Cooper and helped alleviate the threat of malaria around lakes Marion and Moultrie. Today that mission continues with efforts to control disease-bearing mosquitoes that spread West Nile virus, eastern equine encephalitis and other vector-borne illnesses.