If you rub paint or lacquer with a brush and water once a month it is bound to have some effect. As is wiping with a damp cloth or squeegeeing in to the frame and wiping round with a scrim and as is leaving the frames to absorb dirt and wiping them off once a year.
When I was trad. I would often pick up flakes of paint on my applicator or squeegee.
In my opinion having wooden windows means that they will need painting, staining or lacquering from time to time. The method of cleaning or neglecting them to airborne pollution will have little difference to the time scales between painting.
Occasionally a custy will get a bee in their bonnet about this and it is usually those who neglect their windows and want to have a moan. Don't accept any blame unless you scrub like a scrubby thing from scrubbyland in wormwood scrubs!
Oh and welcome to the looney bin that is cleanitup unless you are a reincarnation of someone who has left in which case welcome back!
