top of page


number of acres treated in the 2024 season

  • Lazy River South

  • Quail Run Golf Course

  • Riverview Drive

  • Whittier Neighborhood

  • Lazy River Drive (including all side streets)

  • OWW 1

  • OWW 2

  • Forest River Acres

  • River Meadows

  • Unit 6

  • Unit 8

  • Big River Drive (including all side streets)

  • Huntington (including all side roads/courts)

  • DRRH 1-5,9

  • Vandevert Acres

Fogged Areas as of June 13, 2024:

If your neighborhood or street is not listed, you are next on the list. Our goal is to treat the entire district and then return to problem areas such as the Whittier neighborhood and Lazy River South neighborhood.

Looking for a job?

Looking for a summer job?

Are you independent, self-motivated, and enjoy working outdoors? Four Rivers Vector Control District (FRVCD) is seeking self-motivated individuals for seasonal Vector Control Field Technicians and Fog Truck Drivers (April – September).

Find our more on our employment page


Who are we?

Four Rivers Vector Control District is an Oregon Special District that was formed by petition in 1985. The District was established to monitor and control mosquito populations in order to reduce the risk of mosquito-borne diseases, such as malaria, dengue fever, Zika virus, and West Nile Virus. Four Rivers Vector Control District conducts surveillance to monitor mosquito populations, identify potential breeding sites, and implement control measures such as larviciding, adulticiding, and source reduction to help reduce the number of mosquitos and prevent the spread of diseases.

Mosquito Facts

Did you know that mosquitos are the deadliest animals on the planet, responsible for nearly 1 million deaths each year? 

Learn more about these tiny but dangerous creatures and how to protect yourself from bites on our frequently asked questions page.


How do I?

Looking for answers? Find the links to our most used forms below. Whether you're looking for our service request list or looking for our contact information, we've got you covered.

bottom of page