I have fed Scratch and Peck exclusively for 3 years and love it. I don't have a problem with egg quality and no longer supplement with oyster shell. We supplement with worms, slugs and meal worms but not everyday. Not sure how my egg production compares since I have a mixed breed/age flock but my 3 year old hens are still laying consistently. I have plenty of eggs to sell. No different from the Layena I used to use.I had the same problem when I tried it. I went back to De Young's feed or Layena when I am somewhere else and need feed.