Substitute the firewood with the more convenient Real Flame Gel Fuel. This fuel is made with premium formula manufactured from premium-grade raw material. This fuel crackles just like a real fire and works beautifully. It does not produce soot or ashes. The efficient gel fuel produces robust red, yellow, and orange glowing flames that create a full, wide, and high fire. Each can burn for 2 ½ to 3 hours efficiently. This Gel Fuel from Real Flame is great for commercial use too. A single can is capable of producing 3,000 BTUs an hour for optimum heat and light.