An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : News : News
NEWS | Aug. 21, 2012

Mosquito fogging this week on JBSA-Fort Sam Houston

By 502nd Air Base Wing Public Affairs

Targeted hand-held mosquito fogging is scheduled for Thursday morning, Aug. 23 and Friday morning, Aug. 24 between midnight and 3 a.m. at JBSA-Fort Sam Houston.

Thirteen additional mosquito sample pools have tested positive for West Nile Virus since the first three samples during the week of July 18, 2012.

The fogging will occur at the Honor Guard Horse Stables on the west side of JBSA-Fort Sam Houston, and on the east side of the installation near the Fort Sam Houston Golf Course. The treatments will target standing pools of water in those locations.

The application of larvae-killing bacteria also continues, but the fogging will help to combat the adult population that can acquire and transmit West Nile Virus.

Ground application fogging allows the treatments to be directed more specifically than aerial treatments and lessens the possibility of spreading to outside areas.


Mosquito surveillance activities have shown that West Nile virus is present on Joint Base San Antonio-Fort Sam Houston and a decision to fog with a pesticide to kill infected mosquitoes has been made by local officials.

The JBSA installation pest management personnel are licensed and well trained in application of the mosquito fogging products.

The pesticides to be used are synthetic pyrethroids and are relatively safe to humans and pets. The product dissipates very quickly and is virtually all gone by the time it hits the ground. They are very similar to over-the-counter yard mosquito foggers you can purchase at the grocery store. These products however can be harmful to bees, fish and other aquatic life. Although your chances of experiencing any health effects from fogging are quite low, the following steps will help you reduce possible exposures to insecticides during fogging:

· If possible, remain inside whenever fogging takes place.

· Keep children inside during fogging and for about one hour after fogging.

· Close windows and doors before fogging begins.

· If you must remain outside, avoid eye contact with the fog. If you get insecticide in your eyes, immediately rinse them with water or eye drops.

· Wash exposed skin surfaces with soap and water if you come in contact with the insecticide.

· Rinse homegrown fruits and vegetables thoroughly with water before cooking or eating.

· Cover outdoor tables and play equipment, or wash them with soap and water after they have been fogged.

· Bring laundry and toys inside before fogging begins. (Wash with soap and water if exposed to insecticide during fogging.)

· Bring pets inside, cover ornamental fishponds and pools to avoid direct exposure.

Consult a physician if you have dizziness, headache, nausea, muscle twitching or other concerning symptoms in early hours after the fogging.