For those who hear woodpeckers knocking on the woodwork of your home, the reason is undoubtedly that there are "pests" such as insects that constitute woodpeckers' food supply. You can fill the holes all you want, but the woodpeckers will make new ones. To deal with the problem, Insight Pest Solutions works. And when a treatment is unsuccessful, they come back, at no extra charge to treat the area again. Four quarterly treatments should keep the woodpeckers away throughout the year. I highly recommend Insight Pest Solutions as your response to woodpeckers at your home. Alan Jay Rom.