Right, you've bought your wfp system and you have told your customers this is the future of windowcleaning, it's all to do with working at height regulations, health and safety and all that bumf.
Then... custy says will you clean out my gutters please? What do you do - get your ladders out and forget all the health and safety you have drilled into your customers and how it's hard to get insurance and how they could be sued if you fall off?
Or do you refuse to clean them?