My freak of a cat has recently started chewing on the bottom of our front door. He also has mutilated the mini-blinds and still chews on them. I have tried squirting him with water, GARLIC water, spraying cat repellent, rubbing garlic on the bottom of the door, and none of that stuff works. I heard that vinegar is supposed to repel them also but when I tried that he just licked it. Anyone have a suggestion, preferably cheap and something I already have in my house? I dont think it has anything to do with a vitamin deficiency or parasites because he only does it when we are not looking at him, he eats well, never goes outside, and has been de-wormed a few months ago (someone gave him to me). If there is such a thing a cat muzzle I would try that too.