a few hours before it turns.
More InformationAccording to the attached link from the Midwest Dairy Association, the shelf life of milk is reduced by 50% for each 5 degrees over 40°F (which works out to a few hours at room temperature). They recommend 35°F for milk storage.This is the sell by date for stores. Milk is usually good refrigerated for a week post this date
About four to five days, properly refrigerated.
Of course milk needs to be refrigerated because if you don't refrigerate it, it will get chunky and go bad.
24 hours
If you put milk anywhere other than a refrigerated appliance for 10 days, it will spoil.
Baked goods containing sweetened condensed milk should be refrigerated to prevent bacterial growth and maintain their freshness. Sweetened condensed milk is a dairy product and can spoil if left at room temperature for an extended period. Refrigeration helps to prolong the shelf life of baked goods and ensures food safety. It is recommended to store these items in an airtight container in the refrigerator to maintain their quality.
Cheese is made of milk, milk needs to be refrigerated, so yeah it needs to be refrigerated.
3 days
About a week if refrigerated.
If left out on the counter and never refrigerated, it takes around 24 to 48 hours for it to get sour.
Unopened milk can spoil even while refrigerated because there are tons of bacteria in the milk, and if they start reproducing, that will cause much more waste, therefore souring the milk.
Anything made with eggs or dairy should be refrigerated.