I had the same problem. My fuzzies got into the my sofa and a chair. I used a screen door material that is critter proof. It contains no metal, so it's pretty easy to handle. My fuzzies have been scratching at it for a week with no visable damage. Joe Phred ("Hey, what's this?!) Timon ("What the?! Come on, I got foam to shred!") Hobbes ("I just saw 'The Great Escape.' I got an idea.") [Posted in FML issue 1477]