A few observations based on my personal experience:
* A cat will likely overcome her aversion to the deterrent spray stuff. Same with aluminum foil and every other similar tactic I have ever tried.
* A cat can claw through the thickest carpet/fabric until there's nothing but bare wood left. Given that a cat can utterly destroy the item over time, any talk of a cat being less destructive than a dog or human is really beside the point. A cat can and will utterly destroy fabric/carpeting, period.
* IME, attempts at negative conditioning teach the cat to avoid the behavior ONLY WHEN YOU ARE PRESENT. Every attempt I've ever made to associate punishment with a specific act has yielded nearly 100% success while I am present, and close to 0% success while I am absent.
Back when I had cats in my house I had no choice but to close doors to rooms where undesirable behaviors might occur. Of course I frequently shut the cat INTO said room instead of out, despite very reasonable diligence in avoiding this. One would think that a cat would avoid a room she'd been shut into for days without food or water. Of course within a couple of days the cat can't wait to get back into that room she's denied access to. She'll go in and HIDE because she knows you don't want her in there, thus making another lock-in almost inevitable. Funny way those critters roll, I could never seem to reason my way around this lose/lose pattern.
I have never been able to apply reason to what I can discern of feline motivation in such a way as to control the situation and environment in my home so that me and the cats are both happy. Therefore I am now cat-free and fully intend to remain that way.
