I bought a Gallon of milk two days ago and went to return it today because it smelled and tasted bad today(Nov 18, 2009), when I opened it. It doesn't expire until the Nov 23, 2009. Walmart customer service refused to exchange the Gallon claiming that it did not smell bad. Their customer service used to be mediocre and it is quickly going down hill. I doubt that I will be shopping there anytime soon.