The whole point of pasteurizing milk is to kill bacteria that make milk go bad faster.
Raw milk is only supposed to last max 10 days or so. Make sure there is no bacteria in the fridge that can go in the milk and ask your grocery store when it was milked.
The people at the store don't know. The sell by date is best predictor of bottling date. I was thinking maybe I was doing something wrong since it rarely last 36 hours after opening the bottle. Between the wife and I we down a gallon in about 4 days. I would like it to at least last that long.
