Purchased from Costco half and half 1lt. Opened on 15th Feb. Expiry date 22nd Feb. ref. 1478 08:58 23B Issue: sour. Purchased from Walmart 31, Jan. Expiry 17, feb. your ref:1490 15:15 4 2% milk 3 pouches 1st pouch went sour, 2nd pouch a bit iffy and 3rd pouch still in the fridge. These products are never left out of the fridge ( no kids here) no issues what so ever with the fridge (fairly new) I have had problems with these products before but now getting fed up with it. Please advise on how you suggest a resolution to this. Thank you, Marjorie Bell Tel. [protected]