Skip to page body Home About Round Rock What's New City Services Library Parks & Recreation Departments
Round Rock, Texas - Purpose. Passion. Prosperity.
  Click here to start search.
City Attorney
General Services
Geographic Information Systems (GIS)
Human Resources
Inspection Services
Municipal Court
Parks & Recreation
Planning and Development Services
Utilities & Environmental Services
Utility Billing
  Mosquito Spraying Information

Steps to Reduce Mosquitoes

Round Rock policy on spraying
With news about mosquitoes spreading the West Nile Virus, the City of Round Rock has been receiving requests from residents to spray for mosquitoes.

The City of Round Rock does not spray for mosquitoes. There are many reasons, but the most important are the questions about the effectiveness of the insecticide and the negative impact on the environment. Because of these concerns the city continues to promote the importance of preventing mosquitoes at their source and wearing insect repellant to prevent bites.

Spraying chemicals in Round Rock would not rid the city of mosquitoes. To kill a mosquito, the chemical has to actually make contact with the insect. This may work for a swarm of mosquitoes in a wide-open space with no wind. However, driving a truck down a neighborhood street to spray will do little to kill mosquitoes hiding in grass, bushes, trees and backyards.

Not only is spraying costly and ineffective, there may be serious environmental impacts caused by chemicals. While spraying for mosquitoes may provide a short-term response to the nuisance of mosquito bites, it does nothing to affect the larva present in standing water. The spraying of chemicals also has the potential of contaminating our waterways, killing the beneficial fish and organisms that feed on mosquito larva, adding harmful volatile organic chemicals to the atmosphere - - chemicals that cause ozone formation -- and providing a potential inhalation or ingestion hazard to residents who are in affected areas shortly after spraying occurs.

Because of the risks posed to humans, animals and the environment by spraying, Round Rock does not spray for mosquitoes. However, residents themselves can take action against mosquito infestation. The most effective way to reduce mosquitoes in your neighborhood is to remove their source of life -- standing water. Thousands of mosquitoes can hatch from a single puddle of water that is stagnant for at least four days.

Back to Top

Steps to reduce mosquitoes
We offer the following suggestions to reduce mosquitoes around your home and yard:

  • Get rid of old tires, tin cans, bottles, buckets, drums and other containers in your yard or keep them empty of standing water
  • Empty wading pools frequently and store them indoors when not in use
  • Repair leaky pipes and outside faucets
  • Replace your outdoor lights with yellow "bug" lights.
  • Change water in bird baths and scrub them twice a week
  • If you have outside pets, empty their watering dishes daily
  • Clean clogged roof gutters and drain flat roofs
  • Treat standing water that can't be drained with Bacillus thuringiensis israelensis (Bti), available at most home and garden stores
  • Make sure window and door screens are "bug tight"
  • Whenever possible, remain indoors at dusk and dawn, when mosquitoes are most active.
  • When outdoors, wear protective clothing, or use insect repellent with the active ingredient DEET to avoid exposure to mosquitoes. Always read instructions before using insect repellent or other chemicals.

Centers for Disease Control West Nile Fact Sheet

Back to Top

City of Round Rock | 221 East Main Street, Round Rock, Texas 78664 | Phone: (512) 218-5400
©2014 City of Round Rock. All Rights Reserved. | Customer Survey | Site Map | About this website