How do i train my 1yr cat to stop pulling up my carpet?

I have a new burberry carpet and she is addicted to pulling up the loops in the carpet. She loves string! I have given her 2 sistic posts, as well several toys to play with to deter her. I have used a spray bottle when she is in the act but she's has already done the damage (usually done when i'm sleeping near sunrise). I've sprayed the carpet with Pet Organics"No Scratch" from Petco, but the cat still insists on the pulling up the carpet. I've also yelled "NO" when she is lowering her head to start the act of pulling up the carpet, but doesn't work either. Does anyone have any suggestions to help me out?