Kong Naturals Catnip Kong Naturals Catnip is a premium, potent and in a resealable tin for long-lasting freshness. Most cats adore catnip. That's because, in its leaves, stems and seeds, there is an oil called nepetalactone.  The result of a cat smelling or eating it is a kind of chemical reaction that gives the cat a sense of euphoria or overwhelming happiness.  Add even more fun to your cat's toys by sprinkling it on them Rub it on cat trees and scratchers to encourage appropriate scratching Use to soothe for trips to vet or car journeys Create enrichment for your cats by putting it into toys