HabiStat Orchid Bark Substrate Fine consists of 100% natural bark chips suitable for most reptiles, amphibians, and invertebrates. This versatile substrate can be used wet or dry or misted daily to create high humidity. HabiStat Orchid Bark Substrate is also available in a coarse grade as well as 5, 10 and 25 litre bags. A biodegradable substrate in a biodegradable bag - good for your reptile and for the environment! Our range of HabiStat substrates are all now packed in 100% recyclable and biodegradable paper bags. Directions for Use: Spread substrate evenly across vivarium base ensuring a depth of 2" (5cm). Do not overfill if using underfloor heating. Spot clean as required and replace regularly.