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Mosquito Control

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Mosquito Control Program

The mosquito season typically runs from April to October depending on the severity of the winter. After mild winters, the season may last all year.

The City of La Porte uses the following methods to attempt to control the mosquito population:
  • Night fogging
  • Larvaciding of ditches
  • Briquets in ditches
  • If you have any questions concerning the chemicals used in this program, desire to have a copy of the Material Safety Data Sheets (MSDS), questions about the program, information on the time your area is scheduled for spraying, or have a complaint, please call (281) 471-9650.

When Is Spraying Done?

The decision to spray for mosquitoes is determined by:
  • Citizen complaints – large numbers of complaints in either an area or city-wide
  • Mosquito traps – small light traps placed in various areas of the city – more than 25 mosquitoes in a trap will warrant spraying that area
  • Spraying is normally done at night. The chemicals used are not as effective during the daylight or in the heat of the day.
When Is Spraying Not Done?
  • During daylight
  • When winds are above 15 mph
  • During periods of rain
  • When traps or lack of complaints indicate no need
How Do We Spray?
  • Atomizing pump installed on the back of a truck. Produces a fine mist of chemicals and oil carrying agent. Chemical must contact the adult mosquitoes to kill it.
  • Truck should travel at 10 mph – monitoring equipment monitors vehicle speed, application rate, and time. Alarm warns operator if speed is not correct.
  • Monitoring equipment produces a record of operators’ activity for the supervisors.
  • Spraying is done at night when most mosquitoes become active.
  • Spraying begins at dark. 1/3 of the City is sprayed each night.
  • During especially heavy infestations, the first route is immediately begun again after completing the third route.

Other Control Measures

Spraying is not the only measure taken in a comprehensive mosquito control program. During the day, the ditches of the city are sprayed with a chemical and oil mixture to kill mosquito larvae before they mature.

Also chemical briquettes are placed in some ditches to provide long-term control of larvae.
Each citizen can help in the control of mosquitoes by taking the following measures:

  • Get rid of standing water on your property where mosquitoes might breed.
  • Properly dispose of tires, cans, flower pots, etc.
  • Keep gutters clean and freely flowing. Standing water in gutters can breed mosquitoes.
  • Keep swimming pools, spas, and fountains properly treated with chemicals.

Mosquito Control Chemicals?

The City of La Porte uses only mosquito control chemicals which have been tested and approved by the Environmental Protection Agency. No chemicals are used which have proven to be damaging to either public health or the environment.

The City of La Porte Mosquito Control Operators are licensed Pest Control Applicators through the Texas Department of Health and must annually update their training in order to retain their licenses.

If you have any questions concerning the chemicals used in this program, desire to have a copy of the Material Safety Data Sheets (MSDS), questions about the program, information on the time your area is scheduled for spraying, or have a complaint, please call (281) 471-9650.