From the leaf of a tall grass native to Asia, Citronella essential oil has a crisp, fresh aroma. With powerful pest repellent benefits, Citronella oil keeps creepy-crawlers out of the house and off your skin and clothing. It is an ideal companion for camping, hiking, and trips to the great outdoors. The oil works by masking the human fragrances that insects find appealing. Oil components include citronellal and geraniol, which are good for cleaning surfaces in and outside the home. When inhaled, Citronella promotes happy, positive feelings. Applied topically, it can be soothing to the skin and scalp.