A cat scratching post does not have to cost you a lot of money. With a few scraps of cardboard you can make a scratching post your cats will love more than your carpet

For this you want to create a shoe box(or just use a shoe box) shape out of a few pieces of carboard. After you have created that box, place cardboard inside of the box as shown below. It is a simple and effective way to keep your kitties happy without having the carpet ripped up.