2021 Infected Mosquito Treatment Zones / Schedule

Mosquito spraying occurs when mosquitoes trapped test positive for West Nile Virus or there is a higher number of uninfected mosquitoes than normal.

  • July 20: IRV-57. City of Irving Vector Control Laboratory confirmed a positive West Nile Virus sample from a mosquito trap. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9 p.m. July 20 to 4 a.m. July 21 in this area, weather permitting. ULV fogging is not dangerous to pets or people.
  • July 13: IRV-35. City of Irving Vector Control Laboratory confirmed a positive West Nile Virus sample from a mosquito trap. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9 p.m. July 13 to 4 a.m. July 14 in this area, weather permitting. ULV fogging is not dangerous to pets or people.