
Carpenter bees make holes in wood for their nests. Repairing carpenter bee damage is pretty simple. Gather the right tools: cork, dowels, latex wood filler and caulk. These can all be used to fill the holes.
How do you fix carpenter bee holes?
Signs of a Carpenter Bee Infestation
- Holes in Wood. The most common sign of a carpenter bee infestation is the presence of small, round holes in wooden structures.
- Cracks and Crevices. Carpenter bees often enter homes through cracks and crevices. ...
- Pollen and Feces. Carpenter bees feed on nectar and collect pollen and nectar to store in their nests. ...
- Sawdust. ...
What do you use to fill carpenter bee holes?
Things You'll Need
- Exterior caulk
- 1/2-inch wooden plug
- Insecticide
- Garden sprayer
How to stop carpenter bees naturally?
Oiling the bees
- Almond oil: The essence of almond oil or simple almond oil is a great remedy when it comes to fending off these bees from your house.
- Tea tree oil: Alternatively, use tea tree oil to deter carpenter bees. Take water (8 ounces) and add 1 tbsp. of tea tree oil in it.
- Eucalyptus oil: You can also use eucalyptus oil for this purpose. ...
How do carpenter bees make holes in the wood?
- The early fall is the best time for preventative measures because the galleries will most likely be empty: the young adult bees will have hatched and moved on, while the ...
- Plug up carpenter bee holes. ...
- Carpenter bees prefer weathered or unfinished wood. ...

Should I fill carpenter bee holes?
The female carpenter bees have finished their nesting duties and passed away in their tunnel. Filling the holes accomplishes two tasks: It stops any larva laid in the nest from emerging in the spring. It stops carpenter bee young who are scouting for a new home at springtime from choosing your holes.
How do you fill holes made by carpenter bees?
5:346:32Fixing Carpenter Bee Holes - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd the next thing you want to do is just come in with some caulking preferably outdoor caulking theMoreAnd the next thing you want to do is just come in with some caulking preferably outdoor caulking the siding stuff works you know just get enough in there to cover your hole.
How do you treat wood for carpenter bees?
One way to keep carpenter bees from drilling into wood is by spraying pesticides that contain either cypermethrin, deltamethrin or bifenthrin (Ortho Home Defense Max) onto wood surfaces. When it comes to carpenter bees, these products act more as repellants than contact poisons.
What happens if you block the entrance to a bees nest?
For honey bees, it is essential that entrance points or blocked off, and if possible remove all the honeycomb. Failure to do this will cause robber bees to find the infected honey and take it back to their hive, thus contaminating it.
Will sealing wood prevent carpenter bees?
Sealing the openings may prevent the carpenter bees from nesting on your property again. If you plan to paint or stain the wood to prevent carpenter bees, you should seal all holes and cracks first. Check for any gaps and holes in exterior walls to prevent carpenter bees from nesting on your property.
Why do bees fill holes?
Because the bees displace so much wood, it takes a lot of product to fill the holes. When the holes are filled with a lot of goop, you can expect shrinkage once the product cures. When the product shrinks, the hole is no longer completely filled, requiring at least another round of caulk or putty—and possibly even more.
How to get rid of carpenter bees in wood?
1. Locate and mark the damaged areas. Small piles of sawdust beneath the underside of wood boards are the calling cards of carpenter bees and will help you pinpoint the holes. 2. Inspect the structure thoroughly, because one nesting hole often indicates a broader a problem with multiple areas of damage. 3.
Why do carpenter bees leave bullet holes?
Some bees leave bullet holes. Here’s how to fix them. I assume that carpenter bees were named for their affinity for wood, because they do love to chew it up. However, carpenters use wood to build things, whereas carpenter bees tend to damage the wood in whatever you’ve already built.
How many species of carpenter bees are there?
In that regard, maybe we should rename them “vandal bees” or “tiny saboteurs.”. More than 500 species of carpenter bees exist throughout the world and nearly all of them burrow into dead wood to nest and lay their eggs.
Where do bees nest?
The entry to the nest is typically a round hole that is approximately 1/2 in. wide.
Repairing Carpenter Bee Damage
The holes that carpenter bees create are fairly easy to repair. You have numerous options. Fortunately the holes are almost always the same diameter. But, the bees can be highly destructive if they are related to the ones that have attacked my gutter boards. In several areas, I have visible channels or grooves that have been cut into the wood.
Corks, Dowels, Latex Wood Filler & Caulk
Once you are fairly certain the bees are gone you can start to plug the holes. Hardware stores sell dowel rods that are usually 3 feet long and are different diameters. I am certain you can find a dowel rod that will fit fairly snugly into the holes.
How to treat carpenter bee holes?
If the female is drilling away when you find a hole (you can see sawdust coming out or hear her working inside) spray a contact pesticide like wasp and hornet spray or WD-40 into the hole. She will quickly back out and die. Immediately fill the hole with wood putty or Energy Seal. You need to treat the hole even if it appears empty since the bee may be resting and, if left alive, will drill back through the plug you’ve just inserted.
What do carpenter bees look like?
April 17, 2018. Carpenter bees are big black solitary bees that look similar to bumble bees but have bare, shiny backs whereas a bumble bee’ s back is hairy. Unlike honey bees that reproduce in hives, carpenter bees drill into wood in order to lay their eggs.
Do carpenter bees attack stained wood?
Although carpenter bees prefer bare wood they will attack wood that is stained. Painted wood surfaces, on the other hand, are rarely attacked since the bees don’t recognize it as wood. We’ve discovered that the presence of a gloss topcoat on top of a stain appears to act somewhat like a painted surface in that carpenter bees rarely drill through it. It could be that the slick, hard surface does not appeal to them.
Can carpenter bees attack pressure treated wood?
Even pressure treated wood is not immune from carpenter bee attack. As the bee drills into the wood, coarse sawdust may be seen coming out of the hole and piling up beneath. Since it only takes a couple of hours for a carpenter bee to drill a hole a few inches deep, lots of holes can appear over a fairly short period of time.
Do carpenter bees have a stinger?
Male carpenter bees often frighten people with their aggressive behavior, but since they have no stinger they are essentially harmless. Females have a stinger but only use it if molested. Once the initial hole is drilled through the surface, the bee will make a turn and excavate a tunnel along the grain of the wood.
