no matter what people say to you at the door it's all a load of crap until they prove it by sticking for more then a few cleans by you selling It 2x I know the window cleaner will have problems ,all you will be really selling is leads not brilliant customers who are going to be perfect and provide the window cleaner with a healthy income all these people are thinking about is getting there windows cleaned not all are looking forward to a regular clean what ever you say they will nod,sign,beg once its done its a 50-50 thing , considering first cleans are hard work , the cancelation paying 2x is a false economy especially on leads