You don't need to put a lot of CS in the milk.Tablespoon should be enough.
Some of CS info says a tablespoon of CS will make pond/lake/ditch water safe to drink. Hulda Clark talks about using a double boiler to kill the microbes that get in it when bottled.I usually put a ounce or so in a gallon.
If its working or not,i have know idea.
Isn't hurting nothing or taste.