On Durham Road north of Durham, on Durham Road farther north, on Route 212 west of Route 611 and on Ballek Road west of Steely Hill, the roadblocks were not the result of hungry ash borers (“Frequent Upper Bucks power outages blamed on emerald ash borer,” July 18).

The emerald ash borer, an ugly little beetle from northeastern Asia, started invading the United States and Canada in 2002. Now the dead trees left in the bugs’ destructive paths are falling over and knocking out power lines.