| Business | Phone |
| Columbia County Grain Growers 106 Highway 261, Dayton 99328 | (509) 382-2033 |
| Columbia County Grain Growers 210 W Main St, Dayton 99328 | (509) 382-2063 |
| Columbia County Grain Growers 717 Whetstone Rd, Dayton 99328 | (509) 382-2912 |
| Columbia County Grain Growers Highway 12, Dayton 99328 | (509) 382-2018 |
| Columbia County Grain Growers Lyons Fry, Dayton 99328 | (509) 399-2300 |