I have just installed the black 2x2 USG tiles in my theater. During installation many of the tiles have dusty finger prints and smudges on them. I cleaned the grids with a damp cloth, but it is taking forever to do 400 sf. of tiles that way, and it is leaving wipe marks on some of them. Has anyone else had to clean their dark tiles? If so, what did you use?
Thanks in advance.
Rob
Thanks in advance.
Rob