🛋️ The sofa problem
Why Does My Cat Scratch the Furniture?
You bought a scratching post. The cat reviewed it and chose the sofa.
Scratching does three jobs at once
It is not sharpening claws in the sense people usually mean. Scratching pulls off the worn outer sheath of the claw to expose the new growth underneath — maintenance rather than sharpening.
It is also a stretch: a full-body extension through the shoulders, back and forelimbs that cats do on waking the way you would stretch getting out of bed.
And it is marking, in two channels at once — a visible set of marks, plus scent from glands between the toes. This is the part people miss, and it explains everything about where cats choose to scratch.
Why they pick your sofa specifically
A mark is only useful where it will be seen. Cats scratch in prominent, socially important places — beside doorways, at the edge of a room, near where the household gathers. The arm of the sofa in the main room is, by that logic, the best available noticeboard in the house.
Texture matters too. Cats generally want something that shreds satisfyingly and holds firm while they pull against it. Woven upholstery is excellent for this. The wobbly 40cm post you bought is not.
What a post needs to beat the sofa
- Tall enough to stretch out fully — at least 60cm for most adult cats, taller is better. A cat should be able to reach up to full extension.
- Absolutely stable. A post that rocks gets abandoned after one attempt. This is the most common failure by a distance.
- The right material. Sisal rope and corrugated cardboard are the reliable winners; carpet-covered posts are confusing, because they teach the cat that carpet is for scratching.
- The right orientation. Watch what your cat already does. Horizontal scratchers suit cats that go for rugs; vertical suits cats that go for chair arms.
- In the right place. Next to the thing they are already scratching — not hidden in a spare room. You can move it a few centimetres a week once it is being used.
Making the sofa worse, and the rest
Cover the target temporarily — double-sided tape, a smooth throw, a sheet of plastic — so it stops feeling good, while the post sits right beside it feeling better. Reward any use of the post immediately; a treat within a second or two does far more than praise later.
Keep the front claws trimmed every couple of weeks, which reduces damage without stopping the behaviour. A synthetic facial pheromone spray on the furniture helps some cats.
Do not punish. Scratching is a need, not a misdemeanour, and a cat that gets shouted at mostly learns to scratch when you are out. And declawing is amputation of the last bone of each toe — illegal in much of the world, opposed by veterinary bodies, and associated with lasting pain and behaviour problems. It is not on the list.
Quick answers
Why does my cat ignore the scratching post I bought?
Usually it is too short, too wobbly, carpet-covered, or in the wrong room. A post needs to be stable, tall enough for a full stretch, made of sisal or cardboard, and placed right next to whatever they are currently scratching.
Does trimming claws stop scratching?
No — the behaviour is driven by marking and stretching, not claw length. Trimming reduces the damage, which is worth doing alongside providing a post they will actually use.
Is declawing an option?
It should not be. Declawing amputates the last bone of each toe. It is banned in many countries, opposed by major veterinary bodies, and linked to chronic pain, lameness and biting.