We have one, purchased through Speigal Catalogue. It gives out nice heat and is quite realistic. However, it does have an odour. I am in the process of trying to find out if this has any adverse health effects. ie: what is the by product of burning alcohol? We have burned three cans at one time, but this is a bit too warm and the fire is just as realistic burning one or two cans. Cans appear to last about three hours burning time and I am not sure if they evaporate when not in use.