Hi Sufi,
Burrowing behavior of your guinea pig can be a sign of being shy or anxiety. We suggest to provide hutches (plastic dome cover) for your pet. This may eventually lessen their frightened behavior and anxieties.
Monitor their eyes too as wood shavings may cause eye irritations once in your pet continues to dig these beddings.
For other related information, please visit and talk to our Pet Care Consultants in all our PLC Outlets.
Warm regards,
Eliezer M. Bauzon, DVM RN