2 questions: I have an angel food cake that was given to us and neither hubby or I like it. would that be too much sugar for 22 chickens? also, I have a container of probiotics for caged birds called AviBios. It has many of the same ingredients as the poultry probiotics, ProBios. would the AviBios be OK to give the chooks in the same manner as I give the ProBios?