chicken feed suppliers/stores

[akemt]

I'm looking for a place where I can buy chicken feed (decent stuff, not walmart-style) in 50lb plus bags.  A national supplier or one in the Seattle area would be preferred but I'm having a hard time googling it. 

I've even looked up making your own feed but there seem to be a great deal of ingredients...anyone have a simple feed suggestion? 

Thanks,

[StinkerBell]

I live 10 miles from Seattle, I use DeYoungs. Not sure if they are national.