Simply clipping the tips of the claws goes a long way to prevent furniture destruction, when combined with a scratching/climbing tree. Some cats like sisal but others prefer carpet on the posts. I have a routine with my present cat where she knows if she jumps to a certain place she'll get a couple Dental Treats, but before she jumps I briefly check her front paws. If there's a longer, sharper nail, I clip it, just the tip. Then I put up the treat. That way she never has to put up with more than one or two snips. I use a regular toenail clipper, but a big sharp quality one. And turn it because claws are taller than they are wide.