Catnip is a highly aromatic member of the mint family native to Eurasia and now widely naturalized throughout much of the world, including North America. It has a long history of traditional use in herbal practices and is most commonly prepared as a tea or tincture. Catnip has been valued historically for its aromatic qualities and its role in traditional herbal preparations. The primary constituent in the herb that is responsible for many of its actions is an organic compound called nepetalactone.
Nepetalactone is also responsible for the insect-repelling properties
of catnip. Researchers at Iowa State University have conducted several
studies on the effects of catnip essential oil and found that the
chemical nepetalactone is more effective at repelling mosquitoes than
DEET and at lower concentrations.†
† "150 Points of Pride", by Iowa State University College of Agriculture and Life Sciences
