Ok i have 7 pullets and 2 roos living together. Im on my 1st bag of layer crumbles. Pol was 1 week ago. If i go back to grower feed and oyster shells, will the roos eat the oyster shells too? Also....Not trying to start a war but what are the advantages of organic. I assume it would be very expensive (like organic veggies at grocery store). I remember seeing on cnn a report that said organic veggies and regular veggies were pretty much equal. Just asking