Avocado leaf litter creates a natural and enriching environment by mimicking the forest floor. As it breaks down, it contributes to the terrarium or vivarium's ecosystem by providing organic matter and nutrients. Avocado Leaf litter also acts as a substrate for microorganisms, which helps in maintaining a healthy soil ecology.  It also offers hiding places for small invertebrates, promotes natural behaviors, and enhances the overall aesthetic of the vivarium. Regular replenishment is necessary as the leaves decompose over time.