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Emergency Alert

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Vector Control is currently strategically targeting areas with high levels of mosquitos breeding. This is determined by setting traps throughout the City where there are breeding sources such as drains, roadside ditches, flood channels, and high grassy fields. The traps will indicate the number of adult mosquitoes in a particular area, guiding our control efforts. Our goal is to treat the high level areas of mosquitos to avoid breeding and eggs from hatching. This is found to provide a longer lasting relieve of mosquito population through our City. 

Vector Control will continue spraying for mosquitos. Please be aware that larvicides are available at most home improvement stores for citizens to safely treat areas where there is standing water, high grass areas, ditches and any flood channels.

Tentative Spraying Route Schedule:

  • Friday, July 23: Routes 21, 24 (Southside / Oso Golf Course)
  • Monday, July 26: Routes 26, 23 (Southside)
  • Tuesday, July 27: Routes 1, 2, 3, 4 (Calallen)
  • Wednesday, July 28: Routes 5, 6, 7, 8, 9(AnnaVille, and Nueces River)
  • Thursday, July 29: Routes 11, 14, 15 (North Beach,  West Side)
  • Friday, July 30: Routes 17, 19 (Seaside Cemetery. IWA.)
  • Monday, August 2: Routes 7, 28, 29 (FlourBluff)
  • Tuesday, August 3: Routes 30, 31, 32 (The Island)
  • Wednesday, August 4: Routes 21, 24 (Southside / Oso Golf Course)
  • Thursday, August 5: Routes 26, 23 (Southside)
  • Friday, August 6: Routes 1, 2, 3, 4 (Calallen)

Mosquito Spray Routes Map (PDF) »
This map identifies route areas for mosquito control spraying.


After any significant rainfall, it is important for the public to remember their role in the effective control of mosquitoes. There are a number of different mosquito species, some being active at night and others during the day. Aside from standing water, tall grass is a popular breeding area for many species of mosquitoes, so please keep your grass and vegetation trimmed closely. Vector Control is asking the public to help them by taking care of your property.

Remember the 5 D’s of Defense:

  1. DEET – Use insect repellent containing DEET.
  2. DRESS – Dress in long sleeves and pants when you’re outside.
  3. DAWN, DAYTIME and DUSK – Dawn, Daytime and Dusk are the times of day when mosquitoes are most active. Avoid being outside during these times of day to prevent bites.
  4. DRAIN – Regularly drain standing water, including water that collects in empty cans, tires, buckets, clogged rain gutters and saucers under potted plants. Mosquitoes breed in stagnant water.
  5. DOCTOR – Consult a physician if you feel sick after being bitten.

Vector Control can only spray and treat standing water in the public areas of our city. We cannot spray or treat standing water on private property. There are larvicides available at most home improvement stores citizens can use to safely treat standing water on their private property.

The City’s primary defense in combating mosquitoes is our larvicide program. It is safely used in public areas and has been proven to be an effective method for treating mosquito-prone areas.                                       


General Information

        Mosquito Management »

        Mosquito Control Around the Home »

        Response to Mosquito-Borne Viruses »
        Detection of Zika, Dengue, Yellow Fever and Chikungunya

        Africanized Honeybees »

        Vector Control and Prevention Unit »



        Mosquito Spray Routes Map (PDF) »
        This map identifies route areas for mosquito control spraying.


Report Abandoned Property with High Grass and Standing Water

If you wish to report tall grass, tires, and/or standing water, you can report code violations through our Online Self-Service Center.