I decided to leave my loose fitting bottom board on this summer. I went to flip the board over since they get dirty from debris falling through the screen. I dropped on end of the board and there were maybe 100 bees under there and the board was completely clean. So I go to the next hive, same thing! Now the bees in the basement are actually working and who am I to tell them they are only allowed to work upstairs. This fall I’ll hold the board up closer and in the spring I’ll flip it and leave it loose enough so they can do their thing. Perhaps working under the hive is punishment for them, or maybe even a reward. Could it be a retirement community for the older bees, your bees may be blessed with extra compassion. I can’t fly well any more but I can help clean house….. and so goes the live of the bees.