First off you have to find the nest, if you can’t find the nest...get a dust sprayer!
My go to weapon for ALL bees, wasps, hornets is SEVIN dust!
If you know where the nest is, spray a good amount straight into the entrance. If you can’t find the nest, spray as many of the buggers you can with the dust.
The way Sevin works is it must be taken into the nest by returning bees, once inside the nest it will kill the whole colony in just a few days!
TRUST ME!