Help with naughty staffordshire bull terrier

was wondering if anyone can offer me any advice on how to keep our three and a half year old staffy of our new loungue (hmm yes we bought a suede look one - silly I know but good price at 1300 for the two)..... she gets on it and rakes it with her claws (again I think this is just something terriers do, they like to burrow) well of course because of the suede look the raking leaves marks... me and my dh are pooing our daks at the moment that she is going to wreck it within a week... we are doing our best at berating her whenever she goes to jump on the couch so hopefully she eventually knows not to go on it at all.... and before any smart bum suggests it, giving away our ebbie-dog is not an option (yes, we have been tempted many times over the last few years) the thing is her behaviour is quite good now, this seems to be our only issue with her. Has anyone gone through this that can offer me advice or know of any product etc that we can spray onto the fabric that will deter her..... I am thankful for any helpful hints.. thanks lunchey