Live Moss ProRep Live Moss can be used as cage decoration or as a substrate and is normally used wet to provide high humidity for moisture-loving reptiles, amphibians and invertebrates. It is also suitable for use in a “wet box” for egg laying or shedding. Live Moss is harvested from sustainable sources. Directions: Place the required amount in a container of clean de-chlorinated water for 10 minutes. Remove and squeeze gently to remove excess water. Please note that this is a fresh, living product and is not sterile.