I also moved from the east coast to the Midwest and yep, it seems to be a Midwest thing. I see a lot of "hay" where I am that doesn't even look edible. Yes, it is absolutely dangerous! My supplier (the 5th in a year) luckily knows what they have, and I am glad to know what is in the hay I feed, but most people just bale whatever. It is mostly referred to as mostly cattle hay and silage bales. They'd mow lawns if they could! Pasture testing is also a must in some cases. I watched a case of fescue poisoning in a pregnant mare after someone said their pasture was ok for mares but didn't test. It was tragic. The owner was inconsolable. It is part of the reason I always want to know what I feed.