I tried dusting solutions but was not effective in my case with bees in the eaves of a house. Sevin dust/spray tends not to work because you can't effectively get it up in the burrows where the females are hanging out.
If you're working with Sevin, you have to mix the dust with something that will stick to the burrow and to the female when she comes out. I would make bee butter with sevin and k-y jelly and then find a way to inject it.
Foaming bee spray MIGHT work because it will deliver some lingering poison up into the hole.
I have tried and I'm not a fan of the bait and bottle solutions either -- you can fill bottles with bees which makes you feel good, but the females are going to continue boring holes in your wood.
The tennis racket solution may make you feel good but it's ineffective because your problem is the females in the burrows, not the males that are buzzing around. You can kill all the males you like, and if there are still females in the burrows, they will simply attract a new set of male bees. Remember your goal is not to kill bees per se, it's to get the bees out of your wood.
To solve the problem you HAVE to kill the bees in the burrows and then poison the burrows in a way that bees won't go back in the following year. Even filling the burrows doesn't work that well without poison because the bees are good at digging out whatever caulk or putty you put in the holes.
These are nasty, tough bugs and they won't go away easily. That said you don't have to panic if you don't remove them immediatley -- they will only drill about 3/4 of an inch each year so it's 3 years usually before they're doing structural damage.