Lemon Balm Insect Repellent Recipe Ingredients • Quart of Vodka • 2-3 cups Fresh Lemon Balm Leaf Directions • Add the lemon balm leaf to the quart of vodka. • Allow to steep for one month. • Strain herb from liquid, and pour into spray bottle. • Add essential oils citronella, peppermint and basil. Keeps away biting flies, and mosquitoes. Do not use on small children.