Pro Rep Calcium Sand can be used as a substrate for tortoises and many other reptiles that originate from arid habitats. If the substrate is eaten it is unlikely to cause gut impaction and actually provides a good source of calcium as it is made from pure natural limestone.
Directions: Spread the substrate evenly over the bottom on the housing unit to a depth of at least 1-2" (2.5-5cms).
Spot-clean daily and completely replace every 2-3 weeks or more frequently if it becomes heavily soiled or wet. Small areas of the substrate can be lightly sprayed to provide local humidity control but avoid making the substrate too wet.