Walls are torn or even chewed, carpets are shredded, and furniture and clothes are fair game. Why this happens varies. Most pets suffer from something called separation anxiety. They simply don't like being away from you. By destroying your stuff, they're telling you not to leave.
Some vets prescribe valium, usually used for humans.
Dr. Weikum says that' s not a good idea. Most vets aren't going to send those type of drugs home with the pets just because there's too many hang-ups with them, and you can run into problems. And medically, they're not the best things in the world to use. If you don't like the idea of giving your pets drugs, but still need a solution, consider the real source of the problem. It might take longer, but you'll have a drug-free pet.