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Helicopter Larvicide Treatment

Sharp Park

Weather permitting, San Mateo County Mosquito and Vector Control District will conduct a helicopter mosquito larvicide applications over water at Sharp Park lagoon in Pacifica. These treatments are scheduled for July 1st, August 5th, September 2nd, and October 7th. As usual, the schedule is subject to change due to weather conditions and mosquito abundance.  Update: the treatment originally scheduled for July 1st will now be conducted on July 8th.

The product we’ll be using is a solid granular bio-rational mosquito larvicide; it targets mosquito larvae only and does not pose a risk to humans, pets, wildlife, fish, or the environment. It is applied by helicopter in order to allow the product to reach the water in areas with dense vegetation, and to avoid the environmental impacts created by treating these areas on foot.

You may see or hear a helicopter above or near the application area. At Sharp Park, some sections of the levee along the west side of the golf course will be briefly closed (5-10 minutes at a time) to allow the helicopter to land safely. The golf course, beach, Mori Point, and the levee in general will NOT be closed.

More information about helicopter larviciding can be found at If you have further questions about this application please call (650) 344-8592 or email

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