Hey! I've had my Banjo for 3 years and Buddha for a little over a year. They have two 4ft tables and a fence around it so they have plenty of space. I've always used puppy pads as the base layer then carefresh under their beds. But lately, Buddha has been burrowing and nibbling on the plastic of the pads. I've tried fleece and it didn't work for our needs. What else can I use as a base layer? (They also usually have 2 tunnels that aren't in this picture, so there's plenty of places to sleep and hide)