A Kentucky family has sued Wal-Mart, saying they found a dead mouse in a milk container the family had been drinking from for three days. The Courier-Journal reported that Robert and Rosalind Grant and their 23-month-old granddaughter sought medical attention and treatment in May after finding the mouse. The family filed suit in Jefferson Circuit Court on Monday.

Wal-Mart spokesman Phillip Keene said the retail giant takes quality and safety seriously and is looking into the complaint, along with the supplier, Ohio-based Superior Dairy Inc.