The bathroom floor in our new house is mainly white tiles with little black diamonds dotted among them. Whatever I do with it it is impossible to make it look clean. I sweep and leave bits behind, I hoover (sorry Dyson) and leave bits behind. When I mop it all I succeed in doing is moving the bits of hair etc to a new location. I also find that if I manage to tread on a bit that is the tiniest bit wet I get a wopping great footprint and all I'm wearing is slippers. Is there a bathroom floor expert or other light coloured floor expert out there who can help me?