For most overnight campers, camping and campfires seem to go together. Campfires are not only psychologically reassuring, they seem to offer an easy way to get rid of trash. But after cooking dinner, it is wise to burn the garbage in your campfire? How benign are the fumes generate when you burn a cardboard box printed with colorful advertising or a resealable sandwich bag? The Missoula Technology and Development Center (MTDC) analyzed gas emissions and ash content from 27 products that are commonly burned in campfires. The garbage ranged from batteries to baby diapers.