coeng, I looked at the video but couldn't get an idea of what the mesh is. Could it simply be aluminum window screen cut into strips, folded, and stuffed into the gaps? If so, you can by that by the roll at a hardware store. The aluminum would fend off the bees, as well as be bendable and sturdy.

It could be window screen mesh but all I know is that I've had two estimates ranging from $250 to $400 per rake (I have three rakes on my house) to install this mystery material. Sounds like a rip off but I don't know for sure.

I didn't understand that you were trying to duplicate a professional procedure. Maybe if you knew just what the material is and how it is applied and why they do it that way, perhaps you'd be better able to decide if it's worth the cost...or not. It's not a rip off if you can't duplicate the results, right?

Certainly there are many projects around the home that we can do ourselves. When it comes to protecting our home, I tend to be very
conservative about what I want us to take on our own.

In this example, I would have to be darned sure that our efforts at
Excluding the carpenter bees was going to be successful. I've seen the damage that these bees can do.

Not looking to do it myself but if I can find the material and hire someone that won't charge a ridiculous amount of money I wouldn't mind saving over a $1000.

Stuffing material in such a manner is not rocket science and should not cost as much as these exterminators are charging people. They're taking advantage of desperate people.

Just found the answer to what was used in the video.

Cobra Ridge Vent material. See link below.

I hope this helps someone in the future with the same problem.

Here is a link that might be useful: Cobra Ridge Vent Material