Although it can be destructive it is important to remember that scratching is a natural behaviour for cats. Scratching keeps their claws healthy by removing the outer layers of the claw. Scratching also marks the territory, both visually and with scent from the scent glands on the paws. It releases stress and anxiety as well as stretching their legs and body. Plus it is also a way of playing and burning off energy.
Destructive scratching on furniture, curtains or carpets can be frustrating. Thankfully there are a few ways to deter your cat from scratching in unwanted places. Sticky Paws are similar to a double sided sticky tape. One side sticks to the furniture, carpet, curtains or wherever required and the other side is also sticky which means when the cat tries to scratch on them they can’t as their paws stick to it. Another option is a deterrent spray, like No Scratch Spray. You spray it onto the area you want to deter the cat from scratching. The blend of essential oils is pleasant to humans but cats do not like it so they should not scratch the sprayed area.
It is really important to provide your cat with somewhere that they can scratch, like a scratcher. This is so they can perform the natural scratching behaviour without destroying the furniture. There are many cat scratchers available from tall scratching trees to smaller poles or ramp style options.