Many local customers have had it with Walmart's Great Value brand of milk going bad before the expiration date on the container. Cynthia Flanagan told NewsChannel 15 that she has had 3 cartons of milk go bad before the expiration date in the last 5 weeks. Her daughter has had 2 cartons expire early as well.Flanagan said that when she tried to pour her most recent carton over her cereal that clumpy expired milk came out, 5 days before the expiration date."They have a lot of dedicated Walmart shoppers and they've taken the choice away as well.. my main goal would be to find out what the problem is and clean it up." Flanagan said about her social media post. Her post has over 150 shares, and about 150 comments of people sharing similar stories.