Don't torture yourself with foul smelling odors to trick deer into thinking predators are nearby. Sulfur free. This organic Deer Repellent use naturally offensive smells to redirect wandering deer without damaging your fruit and vegetables. One application safely restricts deer, elk and moose for approximately 30 days-even in rain and snow. Colorless, odor-free formula (when dry) is great for tree farms, landscapers and rural homeowners. Covers 40, 000 sq. ft.