I'm new here, we have my rabbit in a cage purchased from a pet store. The cage has a plastic base and she has been constantly chewing the plastic to the point where the rim all the way around is almost completely chewed up. We have tried letting her out more often, we have tried the bitter apple spray, and nothing seems to work. She is not litter trained which is why we keep her in this cage still, as it holds her bedding. Anyone have any suggestions for this?