188.8.131.52.1. Killing with liquid nitrogen
It is possible to kill whole colonies by dipping them into liquid nitrogen. The hives have to be manipulated to allow quick air displacement while keeping all bees and SHBs inside. This can be achieved with a screened lid (mesh width, 1 mm). As killing with liquid nitrogen is fast, the spatial distribution of the bees and the beetles inside or on the combs will remain stable.
- Place an adequate container, filled with liquid nitrogen, next to the colony.
- Install the screened lid.
- Dip the colony into the liquid nitrogen.
- Store the colonies in a cold room until they are
Note: it is very important to follow the safety regulations for handling liquid nitrogen.