I use the Jensen jell fuel indoors in a fireplace that's mobile from room to room if you want to move it. The fuel is clean burning yet puts off some heat and sounds like real wood burning, with dancing flames and crackle. For safety reasons, I would not use it in small enclosed room with no ventilation. Just use common sense for safety, otherwise it's great. Storage Tip: Keep extra fuel in the frig, lasts a long time.