Carpenter bees always come around my house during the Spring, and the dogs like to chase them. It gives them a lot of entertainment. The carpenter bees are only searching for unpainted wood, and when the female finds something that she likes, she'll bore a hole in it about the size of your pinky, and lay eggs. The males won't sting, but they are pretty territorial, and inquisitive, they might do a fly-by.
Best thing to do is to find where the female is boring for her burrow, and spray the inside of the hole at night with some wasp/hornet killer(something with a knockdown pyrethrin), and then plug it up with a dowel, and put some wood putty or paint over it. Or just tell your wife to arm herself with a badminton racket, which is quite effective.
I got some pretty cool pictures of a female carpenter bee back in 2009, when I was experimenting with an old Olympus Point & Shoot. That camera took great pictures.
You are in the South, so this guys style might suit you better. :lol: