A well known relationship exists between predators and the animals they prey upon. In the wild, animals like rabbits and deer naturally avoid areas inhabited by predators like foxes and coyotes.

  The red fox is a natural predator of small animals such as rabbits and squirrels. Coyotes prey upon these small animals as well, and also upon larger animals like deer. By using predator urine around your garden, you create the illusionary presence of a predator in the area.