I sprayed a hornet and wasp spray in the holes in the wood last night and this morning there 11 dead bees on the front porch. Not as many male bees flying around the entrance, although I could hear the buzzing in the wood.
I think I am going to use some straws and spray more into the holes, knowing this will go deeper and hopefully kill off more, especially the queen and the eggs. Then it will be time to fill in the holes.
Keep your ears open tomorrow if you hear me scream that the queen is loose. Remember, only the female has the stinger. Hmm . . . nope, I'm not going there about similarities between female wood bees and _ _ men. Yup, I'll admit it; I'm chicken!!!