If your drones won't easily fit through the excluder, you don't have a powerful enough blower.
To each his own, I love using a blower. I place the super on a metal chair (that had the back cut out (the frame is still there.)) The chair fronts the hive. A couple of passes with the blower (I've a backpack blower to which I've attached a long 4" vacuum hose with a pointed nozzle) the bees are blown out, the super placed in the truck .......... and away we go!I have tried it all, brushing, blowing, knocking. Nothing beats Bee Quick, a couple of fume boards, and a sunny day.
This goes directly on the hive or on individual boxes of honey?Yup, on top. Use a fairly good quality cotton sheet fabric set it mid box, sprinkle your chemical, aim the elbow into the wind as needed and in a couple minutes the bees are gone. If there are lots of bees on the top bars it's best to set the box askew for a minute to keep from stunning them.