I think our engineers have been reading this thread! I turned up for a Canaries a few days ago to find the engineer busily scrubbing the centre radio console - always the worst for being covered in food and debris.
I said it was very nice to see him taking the time to do it on a turnround and was told ( very lightheartedly) that they didn't want any adverse comments ending up on the internet! Was then thrown pack of wipes and told to do my own screens.
Nice to go for 8 hours with a shiny flightdeck and happy to do our share of cleaning whenever possible.
Would be nice if the cleaners were allowed to mop the floor on each turnround though, to get rid of the sticky spilled coffee which seems to last til the next check.