I used a large sheet of clear vinyl..the kind that's sold for tablecloth covers...I draped it over the sofa from back to cushions, and tucked it under the cushions...they can't see it, but bump into it ...it bothers them...I made a sort of wall with it...after a while they stop trying and you can take it down.I have a shelter dog that came with bad habits...LOL...but he learned quickly and doesn't even try to get on my furniture anymore.