The people who make Yeowww! Catnip closely works with private farmers to grow, manage and harvest the best organically grown catnip on the Earth. We also obtain samples from additional professional growers each year to ensure that we are offering the highest quality based on freshness, color and aroma. No chemicals or pesticides are used in cultivation, which means Yeowww!® Catnip is completely safe for cats and humans. The signature all leaf and flower top blend ensures Yeowww!® Catnip to be the most effective on the market that no competitor can compete with!