It is well know that lavender oil nourishes the skin and has a calming effect that induces sleep. However, it is a not so well-known that flies hate lavender. They are repelled by the scent of lavender, which is even better than Deet, as an insect repellent. Lavender is one of the best pest repellent plants as the strong floral scent will keep away flies, moths, even mosquitoes, ants and spiders. As a practical tip, fill a small bottle with a spray add tap or bottled water and a few drops of lavender essential oil and spray your skin. Also, add dry lavender grains around the house and cabinets.