Will replacing the redwood facia under the gutters with composite deter the carpenter bees from boring holes?
No. Composite wood is still wood. And if you read our carpenter bee control article, you’ll learn they’re attracted to anything wood and in fact, they actually love composite.
Additionally, we’ve found that replacing facia boards with “recycled plastic” wood won’t work either. Nor will covering the home in vinyl siding. In cases where these efforts have been employed, we find the bees bore into the wood found under the planks or siding. Apparently the smell of wood is a natural attractant and can only be neutralized by covering it with something the bees find repelling.
In the end, once a structure is identified as a good nest site, bees will go to any length to bore and build new nests on it. And to stop them will involve the treatments listed in our article.
Basically that’s the application of Drione to the holes followed by spraying the area with either Cypermethrin or NBS Repellent.
Hand Duster: www.bugspraycart.com/equipment/dusters/crusader
Carpenter Bee Control: www.carpenterbees.com
Give us a call if you still have questions.