Beechwood Chips are kiln dried pieces of beech hardwood These will absorb moisture and waste and is dust free allowing it to be used as a good all round reptile bedding for most species as below
Snakes depending on size
Other lizards etc
also ideal for bedding for birds.
In fact anything that requires a dry arrid enviroment. Care must be taken with many reptile substrates if the reptile eats it - ensure the correct size of substrate is used so that if eaten it can be passed through the stomach and not cause a blockage.