What are the best wood mulch substrates for tortoise?

#1 Zoo Med Repti Bark

This natural substrate is made from bark of fir trees. This is the ideal substrate if you want to increase the moisture and creates humidity enviroments for the tortoise. It also great to place in the shelter place to conduct heat evenly.
What I like about this bedding is that it encourages the natural burrowing behaviour of tortoise. It seems to more prefer to tropical tortoise. It is re-usable and washable so you can use it for multiple time, it also good for grown plants as well. This substrate is economical as it will last for long time and does not need to be changed frequently.
It is treated with triple cleaning process to ensure that it is fine texture, remove any large sticks, dust and dirt that can injure your pet.

#2 Fluker Labs Repta-Bark All Natural Bedding

Fluker Labs Repta-Bark is made of orchid bark, a natural and 100% safe material that can maintain and improve the humidity level in the tortoise terrarium. It is really the good substrate at absorbing humidity. However, you should control the humidity level as it may be molds in high humidity.
This bedding can prevent fungal skin infections in tortoise if the terrarium is overly moist. It comes with the nice sizing pieces of bark, it is about half an inch. These bigger pieces will prevent your pet swallow the bedding and also reduce dust in the tank. The tiny, small pieces can leave a lot of residue in the water bowl.
Once it is added or soak in the water, it can extend its volume and keep the nice humidity high for the tank.

#3 Zoo Med Forest Floor Bedding

Zoo Med Forest Floor Bedding is made of 100% natural cypress mulch, it is not only completely safe that does not include any harmful additives or dye but also crate the comfortable environment for your tortoise. This is one of the best seller bedding products for reptiles that have been received thousand feedbacks and re-ordering from users.
One of the most attractive point of cypress mulch is that it creates the perfect natural forest appearance for your tortoise enclosure. It comes in the perfect size chunks that will ensure there is no chance for tortoise to ingest the bedding material. It also offer the extremely soft and comfortable for tortoise for laying eggs.

#4 Galapagos Cypress Tank Mulch Forest Floor Bedding

This is another bedding that made from natural cypress mulch. It offers the good capacity of absorbency and humidity control. It provides the smaller Bark, which will support natural feeding habits. It is obvious that it will dry after a few days but as long as you mist the cage occasionally, this substrate will maintain the good humidity levels.
Unlike other cheaper brands, Galapagos provide the substrate that does not include small critters and parasites. It is 100% safe and no toxic oils and chemicals, and parasites. Not only that, this bedding is treat to remove any tiny particles. However, the product may contain dust and dirt.

#5 Carib Sea Coco Soft Reptiles Bedding, Coarse Chip

If your tortoise comfortable is what you looking for, you should consider this substrate. It will provide your pet with the perfect comfort in the enclosure. What I like about this bedding is that it will enhance the life quality of tortoise as it will keep the tank always fresh and clean, waste reducing organisms.
This bedding comes with the fresh coconut husks, which will help control the odor of the tank better than other substrate materials. It is also 100% pet-safe as it does not contain any harmful chemicals.