Tests for Olfactory Repellents for Coyotes and Dogs

Abstract
Five coyotes (Canis latrans) and 3 dogs were individually trained to run from a start box across a 6400-m2 enclosure to a visual stimulus were they received a food reward. Candidate repellents were presented in the area of the visual stimulus, and their ability to inhibit the test animal''s food-getting response was measured. Of the 45 candidate repellents tested, only .beta.-chloro-acetyl chloride repelled all of the test animals; however, it is a strong irritant and lachrymator and would be impractical for use in close proximity to sheep. Cinnamaldehyde showed some promise as a repellent. No chemical odor was found that consistently would repel coyotes and dogs but not adversely affect sheep.

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