What I have started doing is 1.5 or 2x the normal price on the first clean. This at least removes that horrible robbed feeling if they tell you not to come back after the first clean. What bugs me is the lack of respect some customers have, for example when you turn up and they run out and say not bother this month. I always tell my new customers 'I only offer a monthly service, and not every other month' but some still think they can have the work done when they fancy, even though you have driven to there house, unloaded your van and burnt your fuel, wasting time and money. This is the kind of thing I am trying to cancel out.