In a partnership with Japanese manufacturer Toto, Casalgrande Padana is producing Bios Self Cleaning Ceramics, a line of self-cleaning porcelain tiles for use in exterior and interior applications. The company claims that a 150-square-meter area of this tile can purify as much air as a natural forest the size of a soccer field, and that it can remove the equivalent nitrous oxide output of 11 cars per day. When exposed to sunlight or artificial light, a combination of titanium dioxide and a formula of metals offering antibacterial properties on tiles is activated and kills 99.9% of four main bacteria strain, according to the company.