Used backpack for first exposure to wfp for last 2 months. Generally very good results and only one complaint on results but now happy enough. Then today get thanks but no thanks from 3 customers. 1. Doesn't like all excess water. 2. Wants me to squeegee water off - she is 90! 3. Decorater husband doesn't like brush potentially damaging paintwork. Told them still have ladders but all poor excuses to say no to wfp. How do others deal with wfp rejection?