I had this gouge on some wood paneling. The area inside the gouge seemed to be crumbling, and there was always a pool of sawdust below it. I covered it up with some caulk (brown caulk). And after a long time, today, I again noticed some sawdust below it.
- what are your thoughts on what's causing it?
- what are your suggestions on fixing this? (e.g. if it's termites, then please suggest any ways you know of to get rid of termites --- professional help, or DIY)
Update: House is located in mid-west USA, on the 44N latitude.