Hi, that was the stuff I was thinking of. Relative of mine used it when her teenage son was sick on carpet after night on booze and it even got rid of the smell of that so it must be good.
Any good bio detergent will also do the job....and is far cheaper. Just work up a good suds into the fabric.
red mentioned powder...I'd prefer the liquid.
We had the same problem with a cat that would appear round our back door and spray away. My wife had had enough, popped him in the basket, down the vets and had him castrated - solved the problem! No one hangs round our back door!!