Grand Prairie is the first city in North Texas to buy and use the Larvasonic. The device sends sound waves through the water to attack and kill mosquito larvae before they can grow.
Highland Village in Denton County has been a hot-bed for mosquitoes. The city continues to trap and fight mosquitoes in the battle against West Nile virus.
A third human case of West Nile virus has been confirmed in Plano, city officials say Tuesday.
The number of mosquitoes caught in the 220 traps placed throughout the county is dropping, along with the number of mosquitoes carrying West Nile virus.
Dallas County Health and Human Services said Monday they have confirmed the fourth human case of West Nile virus in the county for the 2013 season.
Collin County health officials say two human cases of West Nile virus have been confirmed in Plano.
A Dallas group that includes restaurant owners is trying to get city officials to spray for mosquito eggs instead of adult mosquitoes in its West Nile virus efforts.
The City of Grand Prairie says another mosquito has tested positive for West Nile virus in the city.
NBC 5 Investigates built an in-depth, online database designed to show by zip code how frequently the four largest counties in North Texas conduct mosquito trapping and testing for West Nile virus.
The cities of Lewisville and Flower Mound have confirmed more positive tests of West Nile virus in mosquitoes.