What substrates work for tarantula housings?
Peat moss is commonly used for many habitats. It has proven to be easiest to maintain, easy to form around a burrow, the tarantulas seem to universally approve of it, and it’s also inexpensive. You can also do a 50/50 mix of potting soil and peat moss or a 50/50 of potting soil and Vermiculite. Vermiculite by itself has never worked well, the tarantulas tend to climb up the sides of their enclosure to stay off it. It has also been reported to also stick to their feet which of course they don’t like. Whatever product you buy as a substrate make sure to read the label, you don’t want any pesticide or herbicide added.