Fireplaces and wood stoves are designed to burn dried, cut firewood, but many homeowners throw in various other items, some of which may release toxic fumes or damage the fireplace’s components. Pressure-treated wood, for instance, may release toxic amounts of arsenic, and driftwood contains enough salt to damage catalytic converters in wood stoves. Pallets, however, may be safe to burn as long as they were not treated with insecticides. To find out more, check out our new article on fireplace fuel.