Never buy eggs that are kept at room temperature. Any bacteria on the outside of the egg will multiply quickly at warm temperatures and can contaminate the egg when the shell is broken. And never wash eggs before you store them. It can make bacteria more likely to get inside, especially if the egg is warm and you wash it in cold water. Always keep eggs in the coldest part of the refrigerator.
Well, now I know - no more leaving the eggs on the counter, no more washing that guckey stuff off the shell. And here I thought I knew what I was doing!
Ethel - one of my Ameraucanas - they are such pretty chickens and I love getting blue eggs.