"(...)
In October 1999, the Aerial Spray Unit deployed, at the request of FEMA, in response to the mosquito infestation generated in North Carolina and Virginia in the aftermath of Hurricane Floyd. Severe mosquito biting rates, as high as 50 plus bites a minute, were recorded. Approximately 1.7 million acres were sprayed over Virginia and North Carolina significantly lowering the number of nuisance and vector mosquitoes that had been hampering clean-up efforts.
(...)"
http://www.globalsecurity.org/military/agency/usaf/757as.htm