I think those might be the ones that DH gets for me in bouquets because I love the looks so much.

Hmmmm.....carpenter bees? That's what houses are for. haha I think you mean mason. Ask your DH. Carpenter bees love to chew perfectly round holes into wood and create tunnels for their eggs. You should see our fascia board!
They are working on my chicken coop and our mail box stand.