6. Floors in the building, and the lower portions of walls with which an animal may come into contact, must(1) be made of non-porous, non-toxic, smooth, durable materials that can be washed and disinfected easily, and are mould and corrosion resistant;
(2) be in good condition and free of holes other than those for urine drainage, with no parts jutting out and no sharp edges or other potential causes of injury.