I worked on a dairy farm and clean was the order of the day again and again throughout the day.
Poor sanitation is a far greater danger than raw milk.
"Probably of equal importance for the future of milk were Borden's requirements (the "Dairyman's Ten Commandments") for farmers who wanted to sell him raw milk: they were required to wash udders before milking, keep barns swept clean, and scald and dry their strainers morning and night. By 1858, Borden's milk, sold as Eagle Brand, had gained a reputation for purity, durability and economy.
In 1864, Gail Borden's New York Condensed Milk Company constructed the New York Milk Condensery in Brewster, New York. This condensery was the largest and most advanced milk factory and was Borden's first commercially successful plant. Over 200 dairy farmers supplied 20,000 gallons (76,000 litres) of milk daily to the Brewster plant as demand was driven by the Civil War.
The U.S. government ordered huge amounts of it as a field ration for Union soldiers during the American Civil War. This was an extraordinary field ration for the 19th century: a typical 10 oz (300 ml) can contained 1,300 Calories (5440 kJ), 1 oz (28 g) each of protein and fat, and more than 7 oz (200 g) of carbohydrates."