What have you done, with success, to stop your cat ruining your furniture. Right now I have that sticky plastic all over everything, but it's kind of unsightly once the cat has a go at it.
I have used the spray stuff the PetCo has and it doesn't work. They have these clear pads that go over the edges of the couch and it's suppose to help them but the easiest thing I've found is to clip their nails.
I've tried the "no scratch" spray, it has worked on my dining room chairs, they leave those alone, but there's a spot on the back of each couch they love to scratch and I can't get them to quit either!!
My cat tries to scratch my eyes out when I try and clip her. She fights and squirms-two of us together cannot do it. Even tried tying a pillow case around her like the vet suggested, and she got out.