on the website it helpfully tells me that I need a polishing machine
they use it in hospitals, etc a lot
it has little bits embedded in it to make it non-slip and apparently mopping doesn't help clean the edges of them
I had to put some - oh god - bleach on it for a playdoh stain and it all came up a bright lovely colour
rest of it is getting more and more dubious
anyone had this? apart from tipping bleach on it and standing back any suggestions to make it clean?