All natural wood. Great for use with fireplaces, smokers, grills and more. These firestarters have an extra long burn time to quickly and effectively kindle your fire. For indoor or outdoor use. This Pack of 50 Fire Starters by Camerons Products is the easiest, safest, and cleanest way to start your grill or campfire. Use one fire starter per 2-3 pounds of charcoal in your grill, or use in your fire place, smoker, or while you're out camping to quickly and effectively kindle your fire. Works for any grill, smoker, or campfire. Extra long burn time. Non-toxic - safe for indoor or outdoor use. Compatible with all camerons grilling products.