Pine Mountain® Cracklelog® 3-Hour Firelogs are inspired by nature and crafted from real American hardwood. A consistent, accurate 3-hour burn time with the simple strike of a match. Crafted for fireplaces, fire pits and campfires. Simple to use. Fast and easy lighting with no mess. Burns cleaner than ordinary cordwood, producing up to 75% less particulate matter* and up to 80% less carbon monoxide.