Mosquito Control in Four Rivers Vector Control District service area, Oregon — Free Help & Local Info
OHA places this district in Deschutes County with this phone and website. District site: formed by petition in 1985; surveillance, larviciding, adulticiding, and source reduction; a public spray schedule and a do-not-spray list. It says the 2026 board hired Three Rivers Mosquito and Vector Control to manage the district. Described as southern Deschutes County, not the whole county.
What's free
In a funded program, free means no additional visit fee for eligible residents. The capabilities below do not promise free treatment at every address. Confirm fees, boundaries and availability with the agency; Maryland adult mosquito service uses local cost-sharing.
- Property inspections: Not verified; ask the program.
- Mosquitofish for residents: Not verified; ask the program.
- Larval mosquito control: Confirmed program capability; eligibility and terms vary.
- Adult mosquito control: Confirmed program capability; eligibility and terms vary.
- Spray notices: Confirmed program capability; eligibility and terms vary.
How to request service
- Phone: (541) 593-1689
- A direct request URL is not verified; consult the official website for the current request route.
- Official program website
- Find spray notices or notification instructions on the official site
What they will and won't do
Public education and removing standing water are common parts of mosquito programs. Larval control may target public water, ditches and catch basins. Adult mosquito treatment follows local program criteria; a complaint is not a promise of spraying. Inspection eligibility, fish availability, pickup or delivery, response times and seasons vary. Public programs generally do not provide routine yard spraying or event protection on demand. Confirm your address with the agency: ZIP codes and county names do not establish district coverage.
Find help by ZIP
Open the ZIP finder. Its current dataset is partial and focused on California. A missing result does not establish that no public program exists.
Join the local information waitlist
Register interest in future MSQTO updates. This does not request agency service or activate official spray alerts.