Hi guys, so my wife and I habe had our guinea pigs for 4 months now and generally we have had no problems except a bit of dominance issues (typical boys). Now we like to get our boys out everyday for a few hours of playtime in their pen on the floor. We used to put lino down for them to run on as this was recommended to us by a owner of 12 guineas (how she did it I don't know) but lately as creases have appeared in it they started chewing through it and ripping up chunks which obviously is a health concern. I was wondering if anyone had any recommendations for what to put down for them to play on. We have an extremely large pen and most of the mats are just too small. Any help would be much appreciated.