Cats: How to produce a cat dont procure in the vicinity a cat litter or place where on earth he is making his things.?

My wife love cats and there is a single cat that goes to place to make his things. My wife put a cat litter nearby and is near my personal work office and i smell that always or hear the cat doing that.

I cant remove th cat litter because already done it and my wife get mad at me i cant reason that. Tried 3 types of anti cats sprays thing they dont work.

Anyone get a suggestion so the cat leave that part of the house... is a big house he can always jump with he other cats.
Question more or less my kitten?
Answers:    Your question is not particularly clear.

If someone put a 'no entry' sign your toilet, it wouldn't stop you trying to shift in the bathroom would it? The cat needs to go to the toilet. You putting spray at hand will just confuse it.

Why is the litter tray next to your organization anyway? Can you not close your door or not let the cat into that part of the house and move the tray?
Catnip give me a headache. Why is this?   Another quiz give or take a few cat food?   Can cats hold nausea?   Is it true my cat will step into warmth whether in that are males contained by the nouns?