Eggs should not be left unrefrigerated. The longer they are unrefrigerated, the more quickly the quality will deteriorate. Also, if any bacteria made it into the eggs, that would give the microbes a chance to grow.
Yes and no. Obviously they'll eventually spoil but eggs are naturally pretty reislent and will usually last two or three weeks unrefridgerated (great news for backpackers!). This is due largely to natural antibactierial qualities in the shell. Temperature, the health of the chicken that laid the egg and the density and state of the shell (ie: cracks) will all effect longevity. A good rule of thumb is if it smells rotten, it is rotten (hence that "rotten egg" smell), otherwise enjoy!
The quality of the egg deteriorates over time. Grade AA lasts only for about 2 weeks, then it becomes Grade A. Grade A remains Grade A for about a total of one month.
I have had refrigerated eggs last for one month beyond the use by date on the package. They did not spoil, but reduced in quality. The yolk got flatter and the white became more runny. I only used them in cooking, but I wouldn't recommend keeping eggs for so long.
According to the American Egg Board, properly stored eggs rarely spoil - they just dry up.
2 days
They are considered safe, unrefrigerated, after no more than 2 hours. But this must depend on what the eggs are made of. A chocolate egg will be safe unrefrigerated for years.
They don't. If you freeze them they will expand and break
Best used within one week, the danger is Salmonella poisoning. If you are actually concerned about Salmonella, don't leave the eggs out for more than 2 hours.
Blueberries' shelf life varies depends on a couple factors such as how fresh they are when you buy them, how you store them in your refrigerator, and how cold your fridge is. However, generally blueberries will last about a week.
An unwashed, uncracked fresh egg can be used days after being laid. Providing they are kept in cool conditions eggs will last for a week or longer. Many countries still sell fresh eggs unrefrigerated. In North America and many European countries eggs must be refrigerated and graded for quality.
Eggs are a potentially hazardous food. They should not remain unrefrigerated for more than 2 hours. Less time is better.
Once you boil the eggs they are no longer fresh.
Salmon will not last very long when it is left unrefrigerated. It will spoil within the same day. Salmon will last up to two days in the refrigerator, or if cooked, will last up to four days.
Potentially hazardous food should not be left unrefrigerated for more than 2 hours. Less time is better.
Only a few hours, then dispose of them..
It it is left out, it will stay good for about a day or so.
Most experts agree than an egg that stays completely unrefrigerated should not be consumed more than 24 hours after being laid.