When we removed the sliding glass door to put in a new one we discovered something......

Just a little termite/ant damage.

You can see that they went up the wall.

The deck was barely supported so we had to install temporary bracing until repairs have been completed.

Here you can see just how damaging those little buggers can be.

Here are two pictures after the damaged wood had been replaced and the repairs made.

Sorry I did not take a picture of the new sliding door that I installed.