Wildlife Spotting

These wasps are very very small, about 5 millimeters at the most. In the first photo you can see it boring a hole into our barn. They seem to be destroying the structure in our barn. The wings are smoky, and it is black with yellow stripes. The antennae is quite think in comparison to its size. The second photo shows the sawdust that accumulates as the larva bores into the woods. Please help with ID.