Many terrarium-dwelling animals have the ability to dig holes that they can hide in. With the help of Trixie sand you can help your pet to carry out their natural behaviour from the wild. The ruddy terrarium sand holds in moisture helping your pet to digs its holes. Trixie Terrarium Substrate at a glance ruddy terrarium substrate for digging reptiles and other terrarium-dwelling pets silt locks in moisture allows your terrarium pet to shape its own desert supports your pet´s natural wild behaviour no dye or other additives apprx. 20 hours before it dries out Tip To help your pet successfully dig its holes the sand layer should be at least 15 cm deep.