i need to destroy prefab clones

u can apply this script to ur camera

 #pragma strict
 
 var item1 : GameObject;
 var item2 : GameObject;
 var item3 : GameObject;
 var Item;
 
 var dropcount = 0;
 
 function Update() 
 {
     if(dropcount == 1)
     {
         Item = item1;
     }
     if(dropcount == 2)
     {
         Item = item2;
     }
     if(dropcount == 3)
     {
         Item = item3;
     }
 }
 
 function OnGUI()
 {
     if(GUI.Button(Rect(250, 250, 100, 50), "Destroy"))
     {
         Destroy(Item); 
     }
     if(GUI.Button(Rect(250, 200, 100, 50), "Spawn"))
     {
         Instantiate(Item);
     }
     if(GUI.Button(Rect(200, 150, 50, 50), "1"))
     {
         dropcount = 1;
     }
     if(GUI.Button(Rect(200, 200, 50, 50), "2"))
     {
         dropcount = 2;
     }
     if(GUI.Button(Rect(200, 250, 50, 50), "3"))
     {
         dropcount = 3;
     }
 }