Spraying for mosquitoes started in Highland Park on Friday.
The spraying was conducted after a mosquito caught in one of the town's four traps tested positive for the West Nile virus.
Last summer, a Highland Park resident died from complications of West Nile virus during the outbreak that sickened more than 900 people in North Texas and killed 35.
Martin Cox said he doesn't mind that the city is starting to spray so early.
"It's earlier," he said. "But last year, they were just deciding on whether to do it or not and this year they're trying to get ahead of it.".
The spraying was scheduled to finish by 5 a.m.
Highland Park is reminding people to remove any standing or stagnant water to prevent mosquitoes from laying eggs.
Residents can visit Highland Park's Mosquito Control Web page for more information.