2019 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.

  • Oct. 29: IRV-23. Dallas County Health and Human Services has reported a positive West Nile Virus sample from a mosquito trap. Due to inclement weather, conditions are not conducive for conducting truck-mounted ultralow volume (ULV) fogging.
  • July 9-11: IRV-40. Dallas County Health and Human Services has reported a positive West Nile Virus sample from a mosquito trap. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9:30 p.m. to 4:30 a.m. July 9-11 in this area, weather permitting. ULV fogging is not dangerous to pets or people.
  • July 2-5: IRV-15. Dallas County Health and Human Services has reported a positive West Nile Virus sample from a mosquito trap. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9:30 p.m. to 4:30 a.m. July 2, July 3 and July 5 in this area, weather permitting. ULV fogging is not dangerous to pets or people.