Cleaning the egg is by boiling a pot of water, then removing the water from the stove.  Let the water cool for a little while, you should be able to put a finger in it.  Now you can set your egg in the water for 12-15 minutes. You can add a few drops of tea tree oil in the water if you wish. Please do not boil your egg, it might cause it to crack.Wash your egg thoroughly before and after each use.