Back to the roots the nibbling roots are made of 100 natural heather roots and provide a long lasting treat to nibble whilst constantly nibbling off small pieces the animals can follow their natural instinct to gnaw they will enjoy doing so and are kept busy gnawing also promotes the abrasion of the teath and dental care just place the gnawing root in the enclosure and thats all you need to do you can also fasten the gnawing root with the twine at the cage rails there are also two ho