This simple board is designed with a small triangular maze on one side and a simple round hole on the other.
The clever idea of this contraption is that you slip it underneath a full honey super that you would like to remove.
How do you place it on the hive? The round hole goes facing up under the super. When the bees exit the hive they leave the box by going through the round hole. As they come down there are three straight paths of the maze underneath that they exit through.
Later when the bee wants to return to the super and she tries to go up she won't be able to figure out how to get into the super.
Your job is to be sure to return the next day (24 hours later) to remove the super.
During that 24 hours most of the bees in the super will exit the box. They especially will go down into the hive if the nights are cool because they'll want to cluster.
I do find if the nights are warmer that not as many bees will exit the super but using the escape board is still worth it to reduce the number of bees that will need to be swept off the frames.
Later when the bees want to travel back up into the supers they're faced with the maze which is too complex for them to figure out.
If you wait longer than 24 hours to return though the bees will have discovered where the entrances are to the maze and will travel back up into the supers. So timing is important.
So be sure to add bee escapes to your list of bee equipment to get.