I purposely put it against the wall in the kitchen to remind myself to make my farm sign. I always need reminders because I have so many things going on at once.
I couldn't imagine what the sound was, the first time I heard it from the other room, but I am more than happy that she use it.
Wouldn't YOU rather have your cat scratch a board than your upholstered furniture?
Try it, it might work for you too!