FYI, I found some of this a few days ago and my ASFs *love* it. I've used about 1/2 of a 50lb bag in less than a week, which is about twice as much Ol' Roy dog food that they'd eat in the same time period.
I'm very anxious to see if this improves the growth and production rate of my ASFs. Especially considering that I just spent $300 on rats last night!
edit: I can't find any for sale @ $10. This stuff was $18 a bag, but it will be worth quite a bit more than that to me if I get results.