A sisal scratching post may be a good choice here.
Cat tearing up carpet with teeth.
My research for this answer comes from many years of cat ownership.
To attract your cat to the post you can use fresh or dried cat nip on the post.
If you want to actively train your cat to stop scratching the carpet try squirting him with a water pistol or clapping your hands the minute he starts.
Redirect your cat s scratching behavior by placing the post next to an area your cat likes to scratch.
Keep your cat s nails trimmed to reduce the worst effects of scratching.
Because of the possibility of injuring your pet get your vet to show you the procedure soon after adopting the cat.
Cat ripping up carpet at night.
Cover up the spot where your cat scratches.
If possible move a piece of furniture or a scratching post to your cat s favorite carpet spot.
Most cats tear paper because they re bored and apparently destroying paper is sure way to get out of the feline doldrums.
It can then be gradually moved to a location of your choice.
If your cat scratches in several locations provide a post near each one.
You can even use a log if it will stand up.
Cats that are experiencing anxiety are known to tear paper too.
And tearing paper might satisfy your cat s natural urges to hunt cats tear up and rip off parts of their prey before eating them yeah gross.
My stray cat scratches the bedroom carpet when she goes in so i need to get another scratching post for in there but there are also things you can use to deter the carpet scratching others may more.
For scratching that takes place in front of an entryway cover the area with a thin mat.
Hope this helps your carpet and your cat.