Scratching is normal cat behavior. It marks territory, stretches muscles, sheds claw sheaths and releases energy. The problem is not that a cat scratches. The problem is that the sofa is doing the job better than the scratching post.
Redirecting works best when you give the cat a better legal target, place it where scratching already happens and make the old target less rewarding.
Match the Surface and Angle
Some cats like vertical sisal. Some like horizontal cardboard. Some want a tall stretch. Some want a flat scratch after waking. If your cat scratches a sofa arm, try a stable vertical post beside that arm. If your cat scratches carpet, try horizontal cardboard or a flat scratcher.
A tiny wobbly post in a corner cannot compete with a heavy couch in the social center of the room.
Put Scratchers Where the Cat Already Scratches
Humans often hide scratching posts where they look tidy. Cats scratch in meaningful places: near sleep spots, entrances, favorite routes and shared living areas. Start by placing the legal scratcher next to the illegal target. After the cat uses it reliably, move it gradually if needed.
Reward the Right Target
When the cat uses the scratcher, quietly reward with praise, a treat or a short play moment. If the cat returns to the sofa, interrupt gently and redirect. Do not hit, yell or scare the cat. Fear does not explain which surface is allowed.
Protect the Furniture During Training
Use temporary covers, furniture-safe deterrent tape or rearrangement to make the old target less satisfying while the new target becomes familiar. Keep claws trimmed if you know how to do it safely, or ask a veterinarian or groomer to show you.
Build a Scratching Map
One scratcher is rarely a complete plan. Place options near sleeping areas, common routes and rooms where the cat spends time. Pair this with the Indoor Cat Enrichment Planner and the Cat Gear Sizing Guide before buying large cat trees or posts.
If scratching is sudden, frantic or paired with other behavior changes, check for stress, conflict, pain or environmental change. A veterinarian or qualified behavior professional can help when the pattern does not respond to better setup.