Based on the sources, scratching is a deeply ingrained biological necessity for cats. They scratch rough surfaces to shed the dead outer layer of their claw sheaths, and it serves as a crucial way to mark their territory by leaving their scent
Because you cannot stop a cat's instinct to scratch, the most effective method is to redirect this behavior away from your furniture using the following strategies:
Provide Dedicated Scratchers: Set up sturdy scratching posts and cardboard scratchers in your home. These rough surfaces are ideal for them to maintain their claws safely.
Utilize "Scent Soakers": Because cats use scratching to establish territory, you should provide approved "scent soakers." Items like carpets, beds, blankets, and cardboard scratchers absorb your cat's scent, allowing them to claim the space and feel secure without destroying your furniture.
Fulfill Environmental Needs: The American Association of Feline Practitioners (AAFP) lists having access to scratching posts to leave their scent as one of the five essential pillars for a healthy feline environment.
By providing plenty of acceptable scratching alternatives in areas where the cat spends a lot of time, they will naturally gravitate toward these objects rather than your couches or chairs.