I went to my local feed store and I asked for starter mash for my ducks. I asked if it was unmedicated and they said they didn't know, but it was the only one they had and that everyone who came used it. I bought it, but I'm afraid to feed it to my ducklings now (they aren't born yet, 5 days till hatch date). So should I use it? Is there some say to figure out if it is medicated or not? It just came in a big brown bag that says Starter Mash haha, this place is a little family owned store.