Have you ever milked a cow in your life?
I worked in a dairy operation, long ago, and saw the shit skimmed off of the raw milk in the vats twice a day -- seriously. We washed the cow's utters and teats before we hooked them up and miked them of course but fucking stupid milk cows will chew their cud laying in their own shit sometimes.
Always homogenize cows milk.
Breast milk is another story -- hopefully a cleaner one
