Spraying for mosquitos that transmit the potentially-deadly West Nile Virus could begin as early as 8:30 pm Thursday night around the Metroplex.

Billboards, websites, homeowners associations, the 311 tip line, and even police and fire fighters will be out in neighborhoods talking about exactly when it will happen and what people can expect.

Cities that have agreed to aerial spraying include Garland, Richardson, Mesquite, Coppell, Addison, Farmers Branch, University Park, Highland Park, Grand Prairie, and Carrollton. Others could be announced soon.

Cockrell Hill, Sachse, Irving, and DeSoto decided against aerial spraying. DeSoto city leaders chose instead to stick with current measures, such as releasing larva pellets in standing water and encouraging residents to wear repellant.

In Tarrant County, Fort Worth has decided to start ground spraying. This is the first time in about 20 years that the city has sprayed for mosquitoes.

Ground spraying is expected to start Friday at 10 pm and continue for three consecutive nights.

Anyone with questions about the effects of the spray can also call the North Texas Poison Center's help line at 1-800-222-1222. The center is staffed with doctors, nurses and pharmacists and answers calls 24 hours per day.

Click here for the latest updates from WFAA.