A substrate is used in all types of vivarium and holds an important role in the well-being of the inhabitants.
Some types of substrate can be used to hold humidity, which is essential when keeping certain types of rainforest dwelling species that require high humidity levels during shedding and food digestion.
The substrate also adds to the aesthetics of the enclosure and gives the vivarium a more natural feel and look.
Some keepers may choose to use less aesthetic substrates such as paper towels, newspaper or even tiles and linoleum, especially for newly acquired or quarantined specimens.
This is easier for the keeper to keep maintained and there is less risk of the substrate being consumed by the inhabitants.