A chemical is dropped by helicopter onto wetlands to kill larvae and prevent the growth of mosquitoes.
Excerpt from Patch.com, May 23, 2011
By Jessica Tobacman
"Burr Ridge conducted its annual use of a chemical designed to prevent mosquito larvae from growing in local wetlands, and thus, prevent the onslaught of adult mosquitoes. The chemical, dropped from a helicopter ..." (read more)
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