In an effort to prevent the spread of West Nile Virus the City of Van Alstyne sprayed on Wednesday and set follow-up spraying for Wednesday, Sept 7. This spraying is in response to the Grayson County Health Department notice that one mosquito trap set at 245 W Van Alstyne Parkway has tested positive for West Nile Virus (WNV).
The active ingredients of the pesticide product as it is used for application for mosquito control generally break down quickly and do not leave a toxic residue. Residents can reduce/eliminate their exposure risk to the insecticide by staying indoors during spraying. Otherwise, no special precautions are recommended.
CDC's West Nile Virus in the United States: Guidelines for Surveillance, Prevention, and Control, updated for the first time since 2003, incorporates the most up-to-date understanding of how West Nile virus spreads between mosquitoes, birds, and people. For more information, go to: