We have two bantam chickens, a Serama rooster and a bantam frizzle Cochin hen, that we keep in the house. We are currently feeding them layer feed, like the outside chickens get, but we were wondering if that is the best food for them? Is there a better feed for indoor chickens? There is obviously a lot that they aren't getting that the ones outside forage for in their pens. I've started giving them poly-vi-sol vitamins and grit when they need it. Is this alright for them? Thanks!