Had initially bought to go on the sides of a sofa the cats were scratching the bejeebers out of, but it was too tall & there was no way to securely attach. I bought 2, and right now they're on different pieces of furniture held in place by other pieces of furniture so they don't topple over. They have, however, greatly helped with the sofa-scratching problem; they're wonderfully tall enough for the cats to stretch out really well when scratching; and all of them seem to love them. I'll definitely get more of these.