What do a snake tortoise and lizard all have in common. They are sure to love Fluker’s Repta-Bark Forest Floor Substrate! This 100% natural substrate is the perfect stand-in for natural forest floor substrate so your pet can feel calm and comfortable at all times. Put about two inches of Repta-Bark into your reptile’s terrarium and allow it to go to work! Repta-Bark will go to work immediately to absorb water and waste to keep the environment at the perfect level of moistness.