I'm having a really hard time finding Certified Organic chicken feed in my area, and the one store that sells it only has Layer Mash. They told me this would be fine for my chicks (aged 4 and 8 weeks) but I am not so sure. Are they right, or should I make other arrangements? I have a few days worth of non-certified organic grower crumbles for them but I really need to be feeding them Certified organic because the land we live on is certified. I would like to eventually make my own feed but will not have the resources immediately. I just need something to get us through the next couple of weeks.