What's the most interesting thing you've washed this year?

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By far my most insteresting project in the last few years:

Two-stepping windows

Got an interesting request for cleaning windows at an in-patient psych facility. They have security bars that are not removable. The windows haven’t been cleaned in many years. I have a good working relationship with the facilities maintenance manager, and he has realistic expectations on a touch-less window cleaning. I got to thinking, how would a fleet-washer’s brain think about tackling this sort of thing? Could it be safely two-stepped, with a pure water rinse? @Hotshot, @dperez, any other…