In September, Asian hornets are present in gardens while sugary bottle traps often prove…

In September, Asian hornets are present in gardens while sugary bottle traps often prove ineffective. The colony is already established and the secondary nest has grown all summer, so catching a few workers has little impact and harms other beneficial insects. What method truly protects hives and biodiversity?

In spring, control targets founding queens on their small primary nests. By September, secondary nests are hidden high up and the colony is fully active. Trapping a few workers does not affect the nest’s core, which continues producing new individuals. These hornets can even trap bees at the hive entrance, endangering the colony.