On boarding VS10 yesterday, the gateman was standing there with his paperworl out on the side. As I glanced down, I noticed that it said the secure aircraft cleaners boarded at 21:00 and left at 21:08......only 8 minutes to clean and A340-600....I hope that there was a lot of them!!!
I cant remember where i heard it but i think that cleaners spend about 6 seconds per economy seat and 12 seconds business/first class seats.
Dont hold me to this info i just know i heard something like this.