Mosquito larvae are only found in standing water, so mosquito
larval control products are applied to water. These products are
often applied by hand to small areas, such as backyard ponds and
The District uses a helicopter to apply solid granular larvicide
to larger areas where there is dense vegetation or where applying
the product on foot might harm sensitive wildlife and habitats.
Currently, a helicopter is used at Annex Lake, Mills Field, and
Sharp Park golf course.