In the destroyers‘ chamber you can train your free worker bees to become destroyers. These offer you the opportunity to dismantle stages of chambers already built. Per stage you want to dismantle one destroyer bee is needed. Once it has been trained, you can go into any chamber and dismantle it by clicking on the „remove chamber“ button at the bottom.
An example: You do have a gatherers‘ chamber level 5 and want to completely demolish it, then you will need 5 destroyer bees to do this. They will all be needed in the gatherers‘ chamber for the dismantling.
The destroyer bee can only be used once and dies after having finished its work. The destroyers‘ chamber is available to you immediately.