Something fairly large (borers, beetles, etc.) has been munching on our deck. We've had it treated to get rid of the insects, and now need to refill/repair the tunnels they left. In some cases, they're the size of my little finger. Not sure what kind of wood we have, but it's not painted. Given that we want the repairs to blend in with the rest of the wood, what's the best material to use? If it makes any difference, we're in Florida.