Mesh-floor removed from the Educational TBH

I have decided to remove the mesh floor from this hive because the bottom board was filling up with the detritus falling from above causing much mould, yet bees could not get to it to clean it up. Now that the mesh floor is gone they have the total control over the whole hive. Im sure the bees will loose less pollen now, since walking over the mesh floor makes them loose much pollen which is only feeding the ants which are under the mesh gathering what falls from above. By the way, the mesh is not a sustainable option either.