Per Washington State Department of Agriculture;
“Asian giant hornet (AGH) attacks and destroys honeybee hives. A few hornets can destroy a hive in a matter of hours. The hornets enter a “slaughter phase” where they kill bees by decapitating them. They then defend the hive as their own, taking the brood to feed their own young. They also attack other insects but are not known to destroy entire populations of those insects.“
For the most current up to date information on the Asian Giant Hornet please check Washington State Department of Agriculture website.