thanks all.    
I have found a lot of threads very useful to read.
For the ones who has questioned me about when I will cleaning after I have leafleted....
As said before I was testing the demand with my leaflet drops.   I won't let customers dictate to me when they want them doing, I will tell them when I will coming to clean (within two weeks).  I want to keep my future round in some kind of order, so I want to set the rules from the start to avoid issues,
I can be cleaning within a week, buying a backack and bulding s trolly for it,  I will use spotless water to start with for my water needs.  This will only be a temp setup, and will be kept as a back up.   (providing every goes well and I enjoy it) I will be buying a van and system, probably going straight for a hot water system (still to be researched properly).    This will be sorted within 6 months.
I'm in the process of talking with Royal Mail about a leaflet drop for me.  Looking at about 30,000 leaflets to heavliy push my new bussiness and grow it fast.