Many of us will use a backyard fire pit to warm up a chilly night or roast marshmallows. And many of us will use balled up newspapers and magazines or even paperboard boxes as firestarters. But it's best to avoid using paper products in your fire pit. There are chemicals in printed paper products; when burned, they are released into the air. Even worse, paper products can easily turn into flying ash, which drifts into the air and can cause problems like brush fires and other fire dangers.