All natural, eco-friendly fire starter Squares suitable for both indoor and outdoor use on charcoal grills, pizza ovens, fire pits, camp fires, BBQs and wood stoves. Convenient, all season, easy to use, lightweight, portable, ignites instantly, long burn time, perfect for wet or windy days, unlimited shelf life.  Greenspark fire starter is odorless, non-toxic and will not flavor food.  Each Squares burns for 8-10 minutes and ignites almost instantaneously, approximately 160 Squares in a box.