Reply to Oak Beams
Thanks for your observations. I've often been asked to look at beetle specimens collected in old buildings, including several churches. They often turn out to be death watch. I'm then asked if the timber treatment companies can be made to return and rectify what they were called in to control in the first place. The trouble is that these old buildings, with inaccessible, giant wooden timbers, could be dunked in poison for weeks and yet the beetles could still survive at the impenetrable core of the beams. My only advice is to maintain the upkeep of old buildings by regularly checking for damage of all types and run a rolling schedule of repair and timber replacement.
