The bricked-in area outside of our master bath will be a great place to design a patio for our cats...otherwise known as a catio. We started with a brainstorming session on ways to improve and transform the area and decided on a mosaic pattern for the concrete floor. (Our next project will be whitewashing the brick walls as you can tell they're very moldy and dirty). Update: We're using pool shock in water mixture for bleaching brick walls and it's working...still in progress, and th…