Oh, the sounds of the determined woodpecker! I recall them pounding on my parents' house when I was a kid. We had wood siding, and those colorful birds would pound away looking for insects burrowed in the wood. I don't remember ever having a problem with bugs in our siding, but I do remember how frustrated my parents would get. I especially remember the woodpeckers pounding away at the wee hours in the morning - a natural "wake up" call!