Section 7(i) in The Prevention Of Cruelty To Animals (Slaughter House) Rules, 2001
(i)Rodent-Proofing .-Except in the case of solid masonry, walls constructed of glazed tile, glazed brick, and the like, expanded metal or wire mesh not exceeding 12.5 mm mesh, shall be embedded in walls and floor at their junction and such mesh shall extend vertically and horizontally to a sufficient distance to exclude the entrance of rats and other rodents;
