Here's a unique take on a carpenter bee house. I was going to build a mason bee house, but I have a carpenter bee problem (they're burrowing into the structural 4x4s on my back porch. And I want the bees! They pollinate my fruit trees. I found the "frame" at a local thrift shop, and my brain went to work. It's all natural softwood construction with metal hinges. I filled the shelves with kiln-dried untreated pine 2x4, and wedged them into place with untreated bottom trim from a previous house project. The holes are 1/2 inch "starter holes" because carpenter bees like to burrow out the cavities themselves. I just gave them 32 starting points. We'll see how well it is inhabited when the warm weather returns, but after the larvae hatch and I cover the holes in my structural 4x4's they'll be forced to inhabit this lovely home or go somewhere else (hopefully not too far away).
Hope you don't mind I did it as a video, it's easier to show what I did than if I used a bunch of pictures.
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