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What You Need
4 x 4 piece of wood
Circular Saw or Hand saw
1/2" wood bit
1/2" metal bit
1 Mason Jar
The Big Idea
The female carpenter bee will emerge in Spring and will look for a place to bore a 1/2" round hole. She will bore into the wood and then make a 90 degree turn and follow the grain of the wood. All excess wood shavings will be pushed out of the nest. The female carpenter bee will lay an egg and then place a food source (usually a dead insect) inside the egg for the bee to eat when it hatches into a larvae stage. This is the idea behind the 1/2" holes that are to be bored into the 4 x 4 piece of wood.
One More Thing
Only the female carpenter bee stings and rarely at that. The male carpenter bee will hover around the nesting hole and buzz your head. Often you will see carpenter bees colide in mid-air. This is two male carpenter bees fighting over territory. That usually means there is a female nesting close by.
Take your 4 x 4 piece of wood and drill interconnecting 1/2" round holes that lead into a 1/2" hole at the bottom of the 4 x 4. Usually one hole on each side and one main hole leading to the bottom of the 4 x 4 is sufficient.
Unscrew the lid from the mason jar and bore a 1/2" hole on the lid itself. The lid will then be attached to the bottom of the 4 x 4 and lining up with the 1/2" hole at the base of the 4 x 4. Screw the lid into the wood 4 x 4 so that you can just screw the mason jar onto the lid already attached to the 4 x 4 piece of wood.
Find a place to hang the 4 x 4 carpenter bee trap. The best place is usually around the roofline/soffit area. But, you know your home and you know where the problem areas are located. Place the trap in the problem area(s).
Sit back and watch. No bait needed. No food source needed. Just a nice warm place for carpenter bees to nest. When the mason jar fills up with bees, you can just unscrew and deposit the dead carpenter bees accordingly.
The Big Idea
No pesticides needed. That's the idea behind this carpenter bee trap. Now, some homeowners view the trap as an eyesore. Some HOA's prevent such traps, if they can be seen from the street. And yes, some homeowners say the bees still bore holes in the home and avoid the traps. It's a fairly easy DIY. But, the results have been very mixed with this DIY trap. Your alternative is to call a professional and have them treat the areas where the carpenter bees are boring holes. Breda Pest Management provides such a service that includes treatment and patching holes. The average carpenter bee job ranges $300. The cost would depend on number of holes to be patched and how accessible the holes are from a ladder. We do not charge for estimates at Breda.