You need to use paper liners, sand, or the two in the base with the Geo. The base is fabricated from really hard sporting, wipe cleanse plastic. The Geo Chicken Cage comes with a complimentary pack of 10 paper liners.Other Animals for saleBirds for saleFish for saleHorses for saleInvertebrates for saleLivestock for salePoultry for saleRabbits for s