Woodpeckers will peck at wood mostly looking for food. At certain times of the year, they peck to make sound. This sound is both establishing their territory as well as a way to communicate with members of the opposite sex. When something like metal is found, if it makes a loud noise when pecked the woodpecker will probably keep at it till you put something in place to repel it from the area. This could be our Moving Spider or our Bird Tape. We've had good results with both. You can find more details in our Wood Pecker Control article.

Here are direct links to the information and products mentioned above:

Moving Spider:  http://www.bugspray.com/catalog/products/page1658.html

Bird Tape:  http://www.bugspray.com/catalog/products/page547.html

Wood Pecker Control:  http://www.woodpecker-control.com/woodpecker-control