Gastrointestinal impaction in reptiles and amphibians is considered a secondary condition: it typically arises as a consequence of other underlying issues or conditions. The primary causes that lead to gastrointestinal impaction are usually related to the animal's environment (for example temperature and humidity), diet, or overall health.

The Exo Terra Stone Desert mimics the natural soil found in arid regions, like deserts or savannahs. Most desert soils are not purely sand-based but rather a combination of sand, decomposed granite and clay resulting in interesting and sometimes colorful rock formations. Exo Terra’s Stone Desert allows you to create your own desert or savannah landscape, including cool-humid burrows as well as warmer elevated basking areas. 

A natural substrate can harbor beneficial microorganisms that contribute to the breakdown of organic matter, recycling nutrients, and supporting a healthy ecosystem. These microorganisms create a balanced environment that mimics natural ecosystems.  In a natural substrate, nitrifying bacteria can convert ammonia (produced from animal waste) into less harmful substances like nitrate. This helps maintain a healthier environment by reducing harmful ammonia levels. Some substrates can act as pH buffers, helping to maintain a stable and suitable pH level for the terrarium's inhabitants. As a consequence, natural substrates are an essential component of any bioactive terrarium.