Dont you lads use blowers . Anyone who does, surely knows to be very careful and watch for initial soot traces flying into the air from Gas fires, when switching them on. On numerous occasions, Ive had to go chasing after them, gently lifting or wiping from the carpet. As the carpet is still damp from cleaning they come off easily. Agree with the others - Ultrapac renovate, once used it to clean the entire surface area of a smoke damaged caravan after a small fire caused by a faulty oil burning heater, it did the job.
Dave.