The traditional defense against moths is to scatter moth balls among your clothes. But some people find the odor too strong for their liking and have concerns about the ingredients used to make them. An alternative method of dealing with these pests is with herbs. Not only are many herbs insecticidal, but the aroma of an herbal mixture will also repel the moth. Moths rely on their sense of smell to find the wool where they lay their eggs. Rather than smelling wool the female moth will smell herb