With the help of a hammer and chisel. The method is slower, but quiet and neat. With the help of a bite or a yolk and a hammer on the seam is hit one tile anywhere. After that, with the help of the above tools, the tile is neatly knocked over the entire surface of the walls. By the way, this method is more convenient for the subsequent collection of garbage, since the tile most often moves away from the walls in general, which allows you to more conveniently store it for subsequent export. Well, or you can even use used tiles in the country or balcony.