I have a bed shredder and I can tell you one that was a disappointment. I bought her a Kong bolstered crate pad last week with high hopes. I'll be dipped if she didn't pull back the corner and shred it from the backside within 48 hours!

Give the Primo Pad a try. Was recommended to me by someone who has a destroyer, hers has lasted 5 years. I have an 18month old nester and chewer. Have had the primo pad for a week and he has not been able to get the corners up and chew them off. He did a fair amount of nesting to break it in and now he is leaving it alone. We have the Kuranda cot for his "place" and he does a fair amount of digging on that and has not destroyed that either.