lactose is not natural to a chickens diet and it is wise to avoid it. They, like many of us don't digest it wellWhat I've been doing with the crumbles of chick starter is pouring some milk on top to make a mush and they waste less and eat it all. I get the outdated stuff at the school where I volunteer. They have a lot of the white that doesn't sell. I don't use chocolate of course. You could water it down and that would work too.