Herbs are also known amongst gardeners to be useful for pest control. Mint, spearmint, peppermint, and pennyroyal are a few such herbs. These herbs when planted around a house’s foundation can help keep away unwanted creatures such as flies, mice, ants, fleas, moth and tick amongst others. They are not known to be harmful or dangerous to children or pets, or any of the house’s fixtures. Herbs are often used to repel pests from vegetable and flower gardens.