Homemade Ammonia Deer Repellent for Roses

Human Urine

• Deer are herbivores. Although the majority of rosebushes present sharp, cutting thorns, deer still love to browse rose bushes. The new growth is especially tasty as the thorns are not hardened off. New growth thorns offer little protection from determined deer. If deer are eating your flowers, fight back with an application of human urine. Male urine seems to be the most effective. Collect urine and dilute it with equal parts of water. Pour it around the base of rosebushes weekly. The strong ammonia properties in human urine repel deer.

Carnivore Scent

• Bears, cougars, wolves and coyotes are natural predators that kill deer. When deer detect the scent of a carnivore, they flee the area. Purchase carnivore scent online or from hunting supply stores. Sprinkle about five to eight drops of carnivore scent and 15 to 20 drops of household sudsy ammonia on a strip of cloth or a cotton wick. Tie the cloth strip or wick to the rosebushes. Renew the scent after a heavy rain.

Homemade Deer Repellent Recipe

• Place six eggs (including shells,) 2 cups of water and 6 tbs. of household ammonia in a blender, and mix well. Drizzle the mixture around the base of each rosebush. Reapply after a heavy rain. The offensive odor will deter deer from browsing your rosebushes. The scent also repels elk, moose, rabbits, moles and mice.

Ammonia Foliage Spray

• Combine 6 tbsp. of cayenne pepper, 3 oz. of Murphy's OIl liquid soap, 2 cups of clear ammonia, 20 to 40 drops of lavender essential oil and 12 drops of garlic oil. Mix well and add the mixture to 5 gallons of water. The deer repelling tonic can be applied with a garden sprayer or poured around the root zone of rosebushes. Reapply after a heavy rain.