Oh gosh... well at first my biggest chewer Nes, started chewing on the wood that outline the carpet, when I blocked all the wood lining with coroplast, he resulted to going under my bed to chew on that and the carpet in the corner!!!! I removed my beautiful bedframe to put my matress on the ground to block him from going back there, and as a result, he chewed holes through my matress! He was persistent to destroy anything, no matter how many times I'd block him.
Some of my sheets have little holes in them now currently, but nothing you'd notice unless upon close inspection. I'd say the biggest damage I recieved was when my other ratties chewed up cords of my sound system and almost on my computer!!!
That said we've moved to a different room of the house, the cords are up high were none of my ratties can get them. And rather then block the wood lining the carpet with coroplast, I let it out in the open, because my room is set so that I can see what my ratties are doing. They can't go under something without me knowing about it and still being able to see them. The only time they want to chew on something, with Nes anyway... is if he goes somewhere, where I can not only not see him, but can't get to him either. So I've blocked off a few places where he'd do that.
So far there's been now chewing incidences, and my new queen size bed is on a plateform frame, so no more matress chewing either. My advice? Block the temptation, or find another room for them to play in where they won't chew on your things. Or get a Martin's playpen, OR, cover your matress with material you don't mind getting chewed up. Believe me it's a pain trying to find alternatives that work, I spent over a year in frustration during play time trying to keep my members out from chewing on things that were part of the house lol good luck.
