My roommate's cat Zeus (female) is the worst cat on the planet. I won't go into detail about all the reasons why she is so awful, but rather skip right to the serious problem: she's wrecking the new carpets in our new place. I'm really worried that we're going to have to pay to get the carpets replaced when we move out. My roommate is extremely lazy and doesn't like dealing with problems, and also he is convinced that it's not his cat that's doing it (I have a cat as well, but I am 100% sure that it is his). The exact thing she is doing is this: When the rooms to our doors are closed, if she wants in/wants attention/is hungry, she will dig her claws into the carpet under/around the door and rip at it. She is tearing it to pieces. She did this in our old place, too, but we lucked out and had a flood and they replaced our carpets anyway for free right before we moved out. We have tried: 1) squirting her with water gun whenever she does it - ineffective. she just comes back two minutes later and does it again. 2) chasing her and scaring the shit out of her/grabbing her by her scruff and throwing her around - ineffective. she comes back two minutes later and keeps doing it. 3) grabbing her and locking her in the bathroom - ineffective. she scratches the bottom of the door, causing damage to that. once released, she continues carpet mauling. 4) she has a scratching post and a couch that she can scratch - ineffective. she scratches what she wants, when she wants to. What's interesting is that she KNOWS she's not supposed to do it. Because whenever I open the door to catch her she bolts and hides. So she's clearly doing it specifically to get our attention. The only effective way of getting her to stop is to feed her. But the issue is that now whenever she is hungry, she will do that, expecting to get fed. This is not acceptable, because she needs to stop doing it altogether. So I'm left with two options: either find a way to physically block the damage from happening, or to train her to stop doing it. I don't think I can do the former (my girlfriend recommended laying tape over the carpet around the door, but that won't work because MY cat loves to eat sticky things like tape). So that leaves only the latter: Train her to stop; so that she stops associating this behavior with the reward of being fed. How do I do this?