Porcupines Like Trex?

We have been hearing reports about Porcupines and trex. We would really appreciate any feedback.
It is pretty well known that porcupines like to chew on anything that contains salt or glue. They really like unpainted T1-11, mainly because it contains glue. Canoe paddles and wood hand tools are also favorites as they contain salt from the users sweaty palms.
There have been reports of porkys chewing on plastic culverts and trex decking. Since these products cannot be painted, other measures have to be taken if the problem persists.
If you have pictures of porcupine damage, particularly damage to trex decking and other synthetic products; we would like to post them for our readers.


Make failure your teacher, not your undertaker. - Zig Ziglar