There will be a date on each bag of feed,; Purina has theirs on the white strip closing the bottom of each bag. Some companies use open dating, like Purina. others have it in a code, and you have to ask or look it up. Much less user friendly!
Some vitamins will deteriorate over time, so it...
I pay $16.50 for fresh Flock Raiser 50lbs. at my local TSC. Amazon has it too, unknown mill dates, for $50.00 for 50lbs, and 'free shipping'!!! Some deal!
My idea of 'close to home' is anywhere within thirty to forty miles, as I'm in a rural area.
Mary