Woodpecker Repellent

Is there anything I can put outside my house (wood siding) to keep the peaks of "doing their thing?" They have killed at least seven holes in our walls and begin to pierce the outer wall and get our insulation.

If the peaks are interested in your walls, which can suggest fixes (sorry) because the peaks are insectivorous. They are not interested in your wood siding, in itself, but rather in the dinner, he holds for them. Maybe you walls must be inspected for insect life, and fumigation (by professinal).