Foxes

According to pest control site you can try something called Scoot, mix with water and foxes don't like the smell. Another site said to clean the area they are fouling using bio washing powder.
Same tip about using mens urine (not womans) - I can remember my Grandad doing this many years ago! Although his garden was immaculate they kept chooks in the orchard, one reason to hate foxes.

I was going to suggest something like pheonix's idea - human male urine can be a deterrent to wolves, so might work with foxes.
Our border collie sometimes used to roll in fox poo - what a smell !

Our eldest daughter who lives just outside Leeds with her partner videoed on her phone a mother fox and her 3 baby cubs at the bottom of her garden two weeks ago. Very cute! She was delighted to see them enjoying their (pretty wild) garden.

You could try lion dung, you can get it on Amazon!