Though I'm a city boy, I hear human urine is very effective particularly from a male. Don't ask, just do it.

I only know of two things: a dog or a cat!

Bathgate's suggestion is reputed to work well. You can also use lion poo, but they don't sell it in every garden centre!

The human Pee has to be mans Pee so I've heared?

Or if you don't want your garden to smell like a urinal get a jet spray repeller aimed at repelling cats but will work for anything that moves.