Please be aware that all department facilities will be closed on Monday, May 30th, 2016 in observance of Memorial Day.

Let us know how we’re doing! Call our Customer Service Feedback Line at
314-615-SERV (7378)!

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Mosquito Norway Rat Vector Control

Rodent and mosquito control in your neighborhood


If you are interested in seeing what general section of the county is sprayed for mosquitoes on a particular night of the week, click here. If you would like to hear specific information listing where spraying will occur tonight, call 314-615-4284 (615-4BUG). A recorded message is updated daily between 4:00 p.m. and 6:00 p.m. Spraying begins at sunset.


Vector Control services include

  • Inspecting property for rat and mosquito infestations.
  • Controlling mosquito breeding sites on public property.
  • Controlling rat infestations on public property.
  • Monitoring for mosquito-borne disease.
  • Educating citizens on vector control measures.

These services are provided at no cost to residents of unincorporated Saint Louis County. The mosquito control program is available by contract in municipalities.

Important Phone Numbers

Saint Louis County Vector Control


(314) 615-0680

Dead Animals on Roadway

St Louis County Highways and Public Works

(314) 615-1111 

 MO Dept. of Conservation

(Powder Valley)


For Wildlife Control Only

(314) 301-1500

 Bi-State Wildlife Hotline

(636) 492-1610

-----------------------------------Add another number:

                                       Eastern Missouri Beekeepers' Association                                   

                                       (To report swarming bees)