ZooMed Excavator Clay Burrow Substrate 10 lb. by Zoo Med Go to amazon.com Related posts Top 3 excavator clay substrate for 2022 FeatureZooMed Excavator Clay Burrow Substrate 10 lb. DescriptionHolds its shape so tunnels won't collapse;All natural, no dyes or chemicals;Make your reptiles feel like they are at home in their natural habitat