i am the youngest volunteer at the center, which helps because i can still relate to any issues they might have. we need a big man who can play (team) defense. they are useful in sites with high water tables, and are easy to remove when a foundation is no longer needed. if you don't have a burner, you can make one by filling a large metal or ceramic bowl or elongated dish with sand, and burying the base of an incense stick in the sand on one side. 