Couple questions for a 2nd year beekeeper. I have a hive that has been struggling all winter and it appears to have lost the good fight. 1. how do I know if it is truely gone. I don't hear any buzzing when I tap on the hive. Could there be such a small cluster that it is too quiet. I open up the top and listen through a hole in the candy board and don't hear anything. 2. If it is gone what do I need to do to refurb it. How can I do a post mortum and when do I do it? Don't really want to sweep out the dead bees and add a new package without knowing what caused this one to die. (diseases or something) 3. should I do something to this hive to prevent bees from my stronger one from robbing this hive and getting some sort of disease. any help is appreciated.