I am struggling with my two bunnies being free roam. They are perfectly fine during the day while we can watch them. I have this castle of cardboard boxes that they chew on and play in as well as other toys. They don't chew on any of the wood furniture. The problem is that all their destruction happens at night when we are asleep. They chew the sofa cover, pillows, carpet and baseboards ONLY at night when we can't catch them. Is there a way to fix this so we don't have to put them away at night?