Active ingredient profile

Ammonium soaps of higher fatty acids

Ammonium soap that works on an odor principle; this version of Hinder also contains denatonium benzoate, a bittering agent, as an other ingredient.[1]

Ammonium soaps of higher fatty acids repel deer and rabbits by smell. Ready-to-Use Hinder contains 0.66% of them and leaves a mild ammonia odor on treated plants that may send browsing animals to other food. The label says it is inoffensive to people once applied.[1]

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Active ingredient
Ammonium soaps of higher fatty acids
Chemical class
Ammonium soap that works on an odor principle; this version of Hinder also contains denatonium benzoate, a bittering agent, as an other ingredient.[1]
Mode of action
Odor repellent: a faint ammonia smell diverts deer and rabbits before they feed; it has no IRAC insecticide group[1]
Signal word
Ready-to-Use Hinder Deer & Rabbit Repellent: Caution[1]

What it protects, and plant damage to watch for

Deer use covers ornamental trees and shrubs, annual and perennial flowers, apple and pear trees, and carrots. Rabbit use covers home gardens and the trunks of ornamental trees.[1]

Test a few plants first. Open petunias, impatiens and begonias may spot or drop petals, and leaves of impatiens, zinnia, bleeding heart, roses and columbine can show slight edge burn.[1]

On apples and pears, skip the bloom period, and expect possible cosmetic spotting on fruit if you spray between petal fall and harvest.[1]

Where it is used

Spray before deer and rabbits settle into a feeding habit. Shake well first; the product is already diluted and goes on with a tank or power sprayer as a coarse spray until plants are wet.[1]

In fairly dry weather, reapply every 7 to 14 days for as long as protection is needed, and again after heavy rain. Skip it if rain is expected within 24 hours.[1]

It needs at least 4 hours at 40°F or warmer to dry. Don't water from overhead for 24 hours, and don't spray wilted plants or use a sprayer that held weed killer.[1]

For ornamentals and flower beds, also treat a 2 to 3 foot band of lawn or ground around the plants. For rabbits, brush it on tree trunks just above the height they can reach.[1]

Products and registrations

ProductRegistrantEPA Reg. No.Active %FormulationSignal word
Ready-to-Use Hinder Deer & Rabbit Repellent[1]Matson, LLC8119-80.66%ready-to-use liquid sprayCaution

Safety and environmental hazards

People

Signal word CAUTION: harmful if inhaled. Avoid breathing spray mist, wash contaminated clothing before wearing it again, and stay out of treated areas until the spray dries.[1]

Pets

Store it in its original container where children and pets can't get to it. Don't let spray drift onto people, animals, parks or nearby yards.[1]

Bees and pollinators

The label has no bee warning. Its environmental caution is for aquatic invertebrates.[1]

Fish and water

May be hazardous to aquatic invertebrates. Don't apply to water or areas with surface water, and don't contaminate water when cleaning equipment.[1]

Common questions

How does Hinder keep deer away?
It works by odor. A faint ammonia smell from treated plants may push deer and rabbits toward other food before they take a bite.[1]
How often should I spray Hinder?
Every 7 to 14 days in reasonably dry weather, and again after heavy rain washes it off.[1]
Will it stop deer completely?
Not always. The label says that when animals are very hungry, as in drought, they will feed even on treated plants, and fencing or a decoy food source may help.[1]

Sources

  1. U.S. EPA Pesticide Product Label System, “Ready-to-Use Hinder Deer & Rabbit Repellent label, EPA Reg. No. 8119-8 (EPA-stamped, Feb. 4, 2010).” www3.epa.gov/pesticides/chem_search/ppls/008119-00008-20100204.pdf (accessed 2026-10-06)

Updated 2026-10-06. Built from sourced records; every rate traces to a product label. Spot an error? Tell us.