I live in a fair-sized garden flat with tiles that start from the front door and go aaallll the way through to the kitchen. There's loads. Metres and metres of them 
I've got a mop, a bucket, Stardrops and the beginnings of an urge to think about perhaps considering doing something about them at some point 
Any tips? I sweep and Hoover them then mop mop mop, right? Any secret stuff I should know? If you help me I'll tell you how long I've lived here and therefore how long they've been neglected and you can all go "OMG that's vile" at me. They're greyish and flecked to start with so I have got away with it for A Long Time 