Applications must be received no later than May 8th at 3:00 pm. Who We Are. The Collier Mosquito Control District (the District) has been in existence since 1950 and has evolved with the changes in the community. The District exists to control populations of both pestiferous and (potentially) disease-carrying mosquitoes throughout the community in which we all live. Contributing to a healthy, high quality of life in southwest Florida and beyond b...