We get asked quite often how long will eggs last…
For commercial eggs, those you buy in the grocery store, farmers have 30 days from the day an egg is laid to get it to stores. Then, the stores have another 30 days to sell the eggs. The USDA recommends a maximum of 5 weeks in your refrigerator before you discard your eggs. What does this all boil down to? On April 1, you could be eating an egg that was laid on Christmas. (from Answers.com)
So that is about 4 months...according to the USDA research. The date that our eggs are laid is on each carton. We package our eggs the day they are laid. One thing to remember is that your eggs will only last if stored in refrigerator for 4 months.
We will say from experience that our eggs have lasted up to 3 months from laid date for us. We keep our eggs in the refrigerator in the climate control boxes.
One way to tell the freshness of eggs to put them in a glass of water. If the egg sinks, it is extremely fresh. If it floats on top, it is really old. Why does this happen?
In an egg, there is a air pocket called the air cell. When first laid, the air cell is small. As the egg ages, the air cell increases causing the egg to float in water. The higher the egg floats, the older the egg.
We feel confident in letting our customers know that our eggs should be good for between 3-4 months from their laid date on the egg carton.