The queen bee and drones can only pass through the upper pipe of the anti-escape frame. A one-way valve is set in the pipeline, and the queen bee and drone cannot go back out. The queen bees and drones enter the storage box through pipes [the worker bees in the storage box can enter and exit freely/can hold about 800 bees, if the worker bees cannot fit in, they will clump together and hang outside the storage box]. If the queen bee cannot get out of the storage box, the colony cannot escape. After the bee colony is separated, remove the storage box and put it in the prepared empty box [it is recommended to find the queen bee and use the king cage to imprison the queen bee to prevent it from escaping again]. Description Product Name:Automatic Bee Divider Function: Divide bee stages, Prevent escaping bees;remove male bee. Color: Gray Size:As Shown Material:Plastic Package Contents:1 Pc Automatic Bee Divider Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.