I think this is down to the customer's attitude rather than the odd drip. She is one of those women teachers who has to be right all the time. I have other customers with milky frames who don't seem to mind, or are prepared to accept a few drips.
He is OK about it but she has set her mind against me. I have been here before, she had me back yesterday to do a reclean. Next time I go she will have me go back again because it won't be right. I can tell you that now.
Every time I do a reclean it means I am missing out on a paying job that I could be doing instead. There comes a point with a moaner where you just have to let them go,
I have hundreds of customers, yet I am spending all this time worrying about one who was fine until she came home and saw the wet windows.
WFP is a compromise, some customers simply don't like it but the vast majority are OK with it. You have to go with the majority.