Hello again Tootnkumin
Well, you have one point there --- but I do NEED to clean the track rails periodically -- both trolley track and elevated tracks. Using a solvent cleaner and small throw away rag or strong tissue on the EL tracks and yard tracks --- for the trolley track I use a diesel locomotive towing two gondola cars loaded to their brims with many years (heh) of saved dead AA and AAA small batteries (for a LOT of weight) rolling on trucks with scale steel wheels -- and a few trailing steel wheeled boxcars.-- running around many times which serves to clean the rails of any oxidation film
ANOTHER problem, not much of one, but on rare occasions, I have to vacume clean the underside of the EL structure (quite tedious) after a few months to remove a few tiny micro spider webs and their hosts --- these spiders are smaller than fleas -- but I do that so these don't accidentally show up in photos --- or get made larger if ignored. Other than that -- no problem,
For that I use a micro tubes and brush vac attachment (available in hobby & craft store) which fits on the end of a regular vac hose with adapter coupling. The long "snout" tube is great for getting into tiny areas ---as are the very tiny brush fittings. See photo embedded into text below;
Lastly -- I use an old telescoping telescoping feathers small dusting brush --see photo attached in text -- to dust my buildings, sidewalks, stations, whatever. these feathers more the dust, grit but do no disturb details
BOTH are handy tools to have for cleaning. These tips may be useful for other viewers here
regards - Joe F