Evie and Harley have successfully bonded and we have been keeping them in a fairly sizable indoor pen at the bottom of the bed that has a base of cardboard to protect the carpet. Unfortunately we found both were chewing the nylon mat that came as the base for the pen and in attempt to prevent either of them suffering from an impaction we took it away and replaced with cardboard. Alas Evie thinks it's fun to start diging and ripping at the cardboard at 4 in the morning. I'm a little bit stuck as to what I can use instead as as the base, both will chew anything material that is put down but being woken up that early is not good for this bunny mummy! Any suggestions would be greatly appreciated!