Are you talking about carpenter bees? They look like bumblebees? All they do is drill 1/2" holes into the bottom of a piece of wood and then tunnel and deposit their eggs/larvae (not sure which). Then they pack in some spiders or other food source, so that the newborn can eat it's way out. They don't eat wood, only drill holes. It gets bad after many years of tunneling. I used to make 1/2" plugs, and lock in the babies.
And yeah, they don't mind tunneling thru treated wood.

steve

I had Carpenter bees invade inside my garage last summer... Up in the rafters and the exposed 2X's .... I went around with a chalk gun and filled all the holes ... they eventually disappeared.

Your deck and the turtles are coming along,in a slow nature,but coming along.

As the Steve said they dont eat the wood just displace it while construsting a home for the next bunch. Cover the holes and countinue to march.

Just bid a job next to a steel clad bilding composed of pannels with foam inbetween the steel sheets. Those little buggers had drilled past the steel into the foam, pushing it out in little piles down below. Those are some bad ass bugs. J.

I should have everything but the final fence rails done by the end of the weekend. The mitre saw was a great investment. A little slower, but all the fits are very snug.

Tapering the edge off the posts on the trapezoid/slant side so that the boards will fit flush on something and then going to both screw and glue them. Sure wish I was temporarily left handed and had a left handed saw for those posts, but I am managing with clamps and a true straight piece of door jam that I bought. Spacing the boards at a minimum (versus trying to notch the posts) as all I want to do is keep anything sloughing off the hill from coming onto the deck and I don't care what the outside looks like.

Wife has a distaste (don't know why) for the neighbors, so all the "ugly" boards are facing them. Also making the back portion higher than the rest to try and restrain the family of deer and the bear we have roaming back there.

Went up to water the deck this evening and shot 6 mmore of the damn bee's. I hate to do it as I said, as they are polinators. It's gonna take a lot of caulk unless I can use spackle, which I have been thinking about. Also hope that the ONE-Time wood seal deters them, but I think that is like hoping that the economy gets better by the end of the year!

Water the deck you say - well all those boards that I layed down to 'cure' are doing just that and warping in the process. Get the wood good and saturated and it seems easier to get the warp edges secured to the cross pieces.

I am SO ready for this to be done. The wife said that she has another project for me when this is done and I told her that the only project I wanted to hear about was finishing a 120 proof bottle of margarita stuff that has been maturing in the refrigerator - and I don't drink!

Hope you get the bid John. If not, you can always pack up your necessaries and trip up to Morgantown, WV where the unemployment is 2.9% and the construction/expansion is incredible. Was something in the paper on Sunday about a need for around 2,500 skilled construction people. But you also have to be able to handle 13,000 or so scantilly clad girl students at the university - projecting almost 30,000 for the fall semester.

A couple of years ago I had to replace the fascia on my garage due to the carpenter bees, but they kept coming back to the same place each Spring. When they came back last year and drilled again I waited until nightfall, when they were in their tunnels, and squirted some WD-40 in there. They came out of the holes, fell to the ground and died. Since others were still coming around I squirted some Drione Insecticide into the holes and sealed them up. A couple of bees come back once in a while, scouting the site out; however, they never drilled and finally left. Hated to kill them but they were doing so much damage.

Sorry to say that I think I killed the queen bee. Feel guilty now, but it is too late.

Next to last set of images updated. If my heart holds out (just kidding), this weekend (5/31) should be the end of this project.

And then all your doubters will have a significant sample of OneTIME® Wood Protector and what 5 gallons covered.

Here is a link that might be useful: Really Big Ol Deck!