Ive used this product for a few years now and its wonderful to have an instant fire in the fireplace without the hassle of starting a fire with real logs.  Actually I have two fireplaces, a real one and a small decorator one that uses gel fuel only.  The gel fuel creates a nice 3 hour fire complete with crackling sounds.  You can use one, two or three cans at a time.  Now that the cold weather is here, its really pleasant to have a fire anytime I want.