2023 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.

View a map of Mosquito Treatment Zones

  • Oct. 10: IRV-23. The Dallas County Health and Human Services has confirmed a human case of West Nile Virus in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area Oct. 10-13 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people. 
  • Sept. 19: IRV-35. The Dallas County Health and Human Services has confirmed a human case of West Nile Virus in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area Sept. 19-20 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • Aug. 22: IRV-32. The Dallas County Health and Human Services has confirmed a human case of West Nile Virus in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area Aug. 23 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • Aug. 15: IRV-24. The Dallas County Health and Human Services has confirmed a human case of West Nile Virus in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area Aug. 15 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • Aug. 8: IRV-17. The Dallas County Health and Human Services has confirmed a human case of West Nile Virus in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area Aug. 8 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • Aug. 1: IRV-11, IRV-17, IRV-20, IRV-29 and IRV-32. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in these areas Aug. 1-3 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • July 25: IRV-09, IRV-19, IRV-31 and IRV-34. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in these areas July 25-27 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • July 18: IRV-12, IRV-15, IRV-42 and IRV-51. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in these areas July 18-20 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • July 11: IRV-17 and IRV-20. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in these areas July 12-14 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • July 5: IRV-01, IRV-13, IRV-22 and IRV-43. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9 p.m. to 4 a.m. July 5-7 in these areas, weather permitting. ULV fogging is not dangerous to pets or people.
  • June 27: IRV-12. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in this zone. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging in this area June 27-29 from 9 p.m. to 4 a.m., weather permitting. ULV fogging is not dangerous to pets or people.
  • June 13: IRV-16 and IRV-58. The Dallas County Health and Human Services has reported a positive West Nile Virus sample from mosquito traps in these zones. The City of Irving will conduct a truck-mounted ultralow volume (ULV) fogging from 9 p.m. to 4 a.m. June 16 in this area, weather permitting. ULV fogging is not dangerous to pets or people.