Anna asks "My question is, can I use a shallow foundation frame in a deep super for drone cell building, so that I can destroy possibly varoa infested drone larvae?" If you put in a shallow super of any size cell into the bottom brood chamber, they almost always use the underside of that frame to produce drone cells and they fill them up right away. Whether or not that will be enough space to satisfy the bee's need to produce drones or not is another story. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::