FARMS Advanced| Tehama County | November 8, 2018
Location of Field Day
Red Bluff, CA
Field Day Host
Andrew Cox, Tehama County Mosquito Vector Control
Red Bluff High School
Orland High School
Mercy High School
Los Molinos High School
Integrated Pest Management
Summary of the Day:
In 1917 Los Molinos, CA had an outbreak of malaria, people were sick and dying. The world had already experienced this scenario during the building of the Panama Canal where the French people that were working on the canal were dying in huge numbers. It was discovered that malaria was being transferred to people by being bit by an infected female mosquito that was a carrier. So in 1917, Northern California created a mosquito vector control to help control the population of mosquitoes and therefore help eradicate malaria..
In the beginning years, they would float oil on the surface of the water to suffocate the mosquito larvae. Since then, we have come so far with the development of new chemicals and methods of controlling this deadly pest. Currently, Tehama County Mosquito Control is built of a team of men who assess the problems in their region and treat accordingly. Depending on whether they are having an issue with adults or larvae they decide which practice is best; treating the water, or fogging for adults.
“There are over 200 species of mosquitoes and some can go dormant for years.” -Stephanie Mills, Red Bluff High School
Water treatment is the easiest method and will kill the larvae before ever maturing into adults. The best approach in water is introducing the Mosquito Fish into bodies of water. These little fish feed on the larvae, stay about the size of a guppy, and are close to 100% effective! The public can pick up these fish at our local office to use in livestock water troughs, ponds, or any other standing water. There are also a couple of chemicals labeled for use in water. One is BTI which kills them, the other is Methoprene which causes them to have reproduction issues.
“It is crazy that female mosquitoes are the only ones that bite!” ~Gabe Harris, Los Molinos High School
Fogging for adults is the second method of controlling the mosquito. This is a very labor intensive task, and during peak mosquito season the technicians often work 14-16 hour days to be able to service their region. The air has to be just right, and typically they do it very early mornings. Each technicians truck is outfitted with a drop machine (fogger) that puts out about 4oz of permethrin per acre and is effective in reducing the population of adult mosquitoes and even some flies.
Spending the day with Tehama County Vector Control was not only educational, but fun! The students enjoyed the time spent with our local technicians and learning about the services they offer. Thank you Mosquito Abatement for your time and knowledge!!