I had seen this idea on Pinterest and it works.  I was going out of town and had recently purchased these lemons so I thought I’d give it a try.  Nothing to loose cause they surely would have been rotten by the time I returned.  I washed them first and then covered them in water in a wide mouth mason jar.  I did this on July 4th, left on the 5th and returned to town on the 14th.  I actually cut one of them last night – 3 weeks later and it was still perfectly fresh and juicy, great idea.  Here’s the original link:  http://www.thehappierhomemaker.com/how-to-keep-lemons-fresh-longer/