I have posted on this subject, before. The fresh milk is not for a cat, but for me, so that I can have fresh milk to put in my tea in the morning.

I purchase a quart plastic/paper container of organic ultra pasteurised skim milk from Whole Foods, then i freeze it. Takes over 12 hours to thaw.

If you live in or near New York State, I think that Stewarts Shops still sells milk in paper containers, much less expensive than Whole (paycheck) Foods.