Thanks for your replies.
I was able to take it to my dad and he will take it back to the feed store tomorrow and get the Starter and Grow food, what is listed on the receipt. I am so glad I keep ALL receipts.
The mill is only open till Noon on Saturday's and I won't be home until around 3 or 4. I will give them some boiled eggs in the morning and that should tied them over until I get home and get the new feed from my dad.
I just can't beleive this happened and it was my fault. I have had so much going on this week I didn't even look at what the guy at the mill was handing me and its been in my car since I bought it on the 3rd. Just took it out tonight because my son has a fishing rodeo tomorrow to go to early in the AM. Well, I guess I can't blame myself entirely, I did give the guy at the mill the receipt and it written on there as plain as day; Starter & Grow. Oh well, lesson learned, look before I leave the site.