I use one but on my kitchen floor and want to get more. With kids, dogs and all I put marble in most of my house. I love it as far as being easy to clean and all but I have to go barefoot; I'm from WV and I think it's in my bloodstream. But as I get older standing on the marble does pay a price; especially when they are cold. I got my mat from BJ's wholesale for around 50; it works really good at cushioning my feet. I would one of the large ones but they are reallly out of my price range. I'm getting ready though to get the sponge mats that interconnect w/each other to see how they work.