I replaced the pine shavings in my brooder box which has 11 chicks (12 days old). Their feed is in a regular circular chick feeder, but they are incredibly messy with their feed. There has to be 5 lbs. of feed in the shavings that I removed. I usually dump the old shavings out toward the edge of the yard, but if I do that the adult chickens who free range every day will find and eat the chick starter in those shavings. Is this a bad thing? It is medicated feed and I'm not sure I want my laying hens eating that.