The BTI strategy has been proven to help reduce the numbers of Mosquitoes. Each neighbor puts out buckets of water treated with a piece of BTI dunk, which was replaced monthly. People have found that this helped keep the summer relatively mosquito free. As long as people don't become lax about replacing the dunks whole neighborhoods can remain relatively mosquito free all summer long.
* credit Howard Garrett, “The Dirt Doctor” down in Texas- See more at: http://whyy.org/cms/youbetyourgarden/some-tips-and-tricks-to-fight-miserable-mosquitoes/#sthash.ee2PsVKy.dpuf