Good Evening Ben, Cigarettes today are self extinguishing, to start a fire by a thrown one, the cig has to be at a 45 degree angle on "Tinder" fuel. the cig has to be facing the prevailing wind above 10km/hr and the humidity has to be 24% or less.... then you have a CHANCE of starting a fire.
The old one of rubber banding match heads around a cig to give a time delay is very much negated by the self extinguishing.
Thats why I have a metal detector in my investigation kit..... the idiots are using sparklers, very hard to spot a small burnt wire in the debris but once the area is nailed down to the size of a coffee table then out comes the metal detector.

