A Number of points come to mind after reading this Topic
1. Flight Deck crew Need to Clean up after themselves, ( I once entered the FD after the Training Capt had left, to find Rubbish, Papers and Food in the Flight Deck, so I did my After Fight Inspection Picked up all Offending Mess Went up to his Office and placed it upon his desk. He asked me what the**** I was doing to which I replied I was returning his mess and next time I found it like that I would do the same, Luckely we were friends and he apologised for the mess and next day sent a memo to all Air Crew asking them to tidy up behind themselves after each Flight)
2. Please if you do spill drink or liquids in the Flight Deck Report it in the Tech Log (Nothing worse than all the Lights and Communications going out Mid-Fight, Over the sea in the Dark, very very scarey)
3. Flight Decks need a proper deep clean every 'C' Check, but that doesn't get done due to Management and Bean Counters not wanting Aircraft in the hangar longer than it needs to be or giving the Maintenace to Third party Outfits who will only do as they are tasked.
I do think BALPA should raise this issue of Flight Deck Cleanliness with the Managment of Airlines and also the CAA, because it does have Health and Safety issues, and with less and less Crew on shift rosters if a pilot does go off sick due to something that he or she picked up on the Flight Deck that also raise's cost issues with the Airlines which will in turn have an affect on Profits.
As you can guess I'm an Engineer I dont like Cleaning up after some of the Pigs that sit up front nor do I like not being able to do anything about it, due to time restraints placed upon me by Short Turnaround Times on the Line or in the hangar Inputs, I want to hand over the Aircraft to the next Crew Servicable and Clean and with luck the Crew will bring it back to me in the same condition, and in that way I dont get as stressed, and have more time to talk to the lovely Cabin Crew.