Question
Our maple tree is approximately 65 years old and about 65 feet high. Something is boring into its trunk resulting in lots of wood shavings below.  I've noticed woodpeckers on it. Its leaves look okay. Is there an organic spray I can use on it or is it too late to be saved?

Answer
I do not know of an organic spray that will work on borers.
Sounds like an insect called a borer. The bark of maple trees in thin and any damage to the bark will cause the tree to ooze sap. First make sure that the tree was not damaged say by a weed eater getting to close.(mulching around the tree with not more than 3 inches deep of organic mulch will keep this from happening an help hold moisture around the roots.
Borers will infest wounds and and can be controlled with the use of an insecticide called merit. Spray the area and the Merit will be absorbed by the bark and kill the insect in the tree. Or a newer product called Bayer Advanced Tree and Shrub Insect Control can be used by applying it to the soil around the tree and the roots will translocate the insecticide to the trunk limbs and leaves killing the borers. This product will give linger protection than the spray and is easier to apply. Check with your local nursery for this product. Here is a web link to this Bayer Advanced.
http://www.bayeradvanced.com/product/Tree-Shrub-Insect-Control/concentrate.html