Actually this may have been my own fault
Not a great success with this afraid. However, it may have been entirely my own fault. Before I decided where to nail it, I propped it against the side of the sofa that my cat had taken to clawing at. However, of course, the first thing she did was have a tentative paw at it and it fell on her. She wasn't hurt but now, of course, won't go anywhere near it, despite me liberally dosing it in catnip.