I have some old layer feed from my old hens. When my babies were old enough to come out side I stoped using it and starting feeding all starter grower since I had a mixed age flock. Now my chicks are not chicks anymore and will soon be laying. The food is a few months old so I'm wondering if it's still good to feed them it or if it's bad. I no it sits in the silo for awhile so wouldn't it get bad there? Thanks for any help!