I have seen a few window cleaners, do this before, and decided to make use of it today. Basically, I left one on the lads on a street, where there was a load of jobs, with a set of ladders, bucket and backpack, with cloths in it. I quite like this idea, and it does work quite well. Now I am thinking, if its something I will make use of, what else other than cloths could be handy to have in there. So who does it, and what do you have in your backpacks?