Currently spending some time in Cuba and recently salvaged a couple of mahogany logs (trees being cut down for road works). The logs were debarked and left on a covered patio to dry while I decided what I would build with wood.
I recently noticed that something is boring into the log. The diameter of the hole is about 1mm, I probed the holes with a wire and they extend in about 1 to 2 cm, not sure if the path of the hole then has a turn or not. I have been unable to see any of the boring insects. I am not sure if it is an entrance or exit hole? See photos.
Based on what I was able to quickly find on the internet, it is not termites as they do not produce sawdust/frass, but is more likely some sort of boring beetle?
I would like to identify what the insect is and figure out the best non-toxic treatment to eradicate this pest.
If you have access to it, you might try submerging the logs in water, at least for a while. This will drown the bugs in the wood, and prevent others from getting in. When I lived in Bangladesh it was common for woodworkers to simply store their logs in the water until they were ready to work with them. I think soft wood like pine might be tempted to rot this way or crack badly after sawing up, but these were dense tropical hardwoods.