Don't buy them from the store, then get directly from the farm.. If you can, tell the farmer beforehand to not put them in the fridge. If he doesn't, they'll keep for weeks at room temp.. Once they are put in the fridge, they have to stay cold or they'll go bad... I've got a local chicken farmer near my parents place that does this for me.. Biggest and best tasting eggs you've ever eaten.. I've eaten them weeks after he's given them to me, never an issue. Perfect eggs for those backwoods trips where you've got no power/no cooling capacity.