how long does it take for milk to spoil unrefrigerated
answers from Los Angeles on. It takes a whole lot longer than 2-4 hours for milk to spoil. Milk is good out at room temperature for up to 7 or 8 hours-it just isn't cold-and we've gotten used to milk being ice cold.nswers from Los Angeles on. It takes a whole lot longer than 2-4 hours for milk to spoil. Milk is good out at room temperature for up to 7 or 8 hours-it just isn't cold-and we've gotten used to milk being ice cold.