Best Seller | Sand Mat Desert Terrarium Substrate, 20 Gal Long, Brown The Exo-Terra Sand Mat has a natural desert appearance and can be applied as a safe and hygienic substrate substitute for your reptiles. The Sand Mat allows you to create a desert-like environment with a minimum of bacterial build up. Unlike loose sand... ... more Sand Mat Desert Terrarium Substrate, 20 Gal Long, Brown The Exo-Terra Sand Mat has a natural desert appearance and can be applied as a safe and hygienic substrate substitute for your reptiles. The Sand Mat allows you to create a desert-like environment with a minimum of bacterial build up. Unlike loose sand... Petco.com | | $13.70 go to store |