Hi Anna,
Check an actual bag of pre mix. AAFCO requires the source be listed. Some time ago I contacted my state feed control official about this issue along with others. A stop sale order was issued and new labels were made. Maybe they just never updated the website.
If the label isn’t listing the source contact your feed official.
Some things are proprietary, but I also think companies hide behind “proprietary” when they haven’t a clue as to what is in their food. I think GL falls into this later category.
