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Adult Mosquito Spray Schedule; Finley, Grandview, Prosser, Richland, and West Richland

Adult Mosquito Spray Map Link:  click here



Small section near the intersection of Piert Road and Hwy 397.

Area off of the southern portion of Carlson Road and the canal road.



Canyon Road from W Robinson Road in the south to about halfway north to Mountainview Road.

Byron Ponds

Grandview Sewage Lagoons


Hicks and Griffin Roads, from and including OIE in the south to Johnson Road in the north.  Plus OIE to S Wilgus and S Wilgus north to Atwood Road.

S Griffin Road from OIE in the north to North River Road in the south.  Plus North River Rd toward County Line along with Paige Lane and Smith Road.

Some areas between and including Buena Vista in the north, Missimer to the west, North River to the south and east.



West Delta


West Richland

Areas north of Twin Bridges Road and east of Snively Road.