U.S. Department of Agriculture: Animal and Plant Health Inspection Service


Document Type


Date of this Version

March 1999


Patent Number: 5,877,223; Date of Patent: Mar. 2, 1999.


Certain volatile compounds naturally present in herring gull eggs are effective for repelling animals and birds, particularly canids, from the locus to which such compounds are applied. More particularly, the volatile compounds which are effective animal repellents include compounds exhibiting mint-like odors such as the compounds pulegone and piperitone. The invention relates to methods of using these compounds to repel animals, and to repellent compositions comprising effective repellent amounts of such compounds.