Citronella is a natural, non-toxic mosquito repellent. Citronella not to be confused with lemongrass, is made of grass varieties. It is oftentimes found in lotions, perfumes, soaps, incense, or that bungalow in the tropics. Without artificial aid, it repels insects and animals. The grassy-floral scents of citronella whiffs, plumes and permeate any indoor and outdoor space easily, offering a hint of tropical aromatherapy.