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Termites cause extensive damage to wood as they create tunnels while
they feed on the wood. These tunnels are called galleries and follow
the grain of the wood. Soft springwood is eaten away, leaving the hard,
heartwood intact. A mere visual check for wood damage will not be enough.
As we have said, the termites have to remain hidden in order to survive.
As a result, termite damaged wood may show no sign of damage since
the termites will leave a thin veneer of wood over their galleries.
Tapping
the wood every few inches with a screwdriver will create a hollow sound
if there are galleries present. The wood that is most likely to be
damaged is any that comes into contact with soil.
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