Victorian and historic tile floors and mosaics can often appear very dirty and look unkept.
This can often be as a result of degradation of the tile surface by footfall.
Waxes can often attract dirt and more modern unsympathetic acrylic and synthetic sealants can degrade quickly. Linseed oil applications can often yellow with age.
Often the dirt and dust can be emulsified into the wax, becoming very difficult to remove.