2.1.5. On premises or in a vehicle used for product preparation:(1) the doors, walls and ceilings must be washable, smooth, not rotten or in the process of rotting and free of bumps or peeling;
(2) the floors must be nonabsorbent, washable, free of cracks and sawdust, cardboard, salt or any other dry or moist material;
(3) the doors, windows, screens and air vents must be fitted in such manner that they prevent any species of animal including insects and rodents from entering.