Queen bee isolation cages can be used for multiple purposes and are a very useful tool for beekeepers. Queen breeders for instance, can use the cage to get accurate age of any  eggs laid  by placing the queen on a frame within the cage. Queen bee containment cages can also be used to create a “Brood Break”, which can be used as part of an effective treatment for varroa mite. Fit normal Langstroth timber hives and HiveIQ Poly Hives Single frame cage takes the space of 2 normal frames Double frame cage takes the space of 3 normal frames.