This oil is distilled from the fresh grass and is a natural insect repellent and vermifuge. It is often used to disinfect rooms and freshen the air. At low doses, it is non-toxic but it pays to test for skin sensitivity before applying to the skin or clothing. It blends well with eucalyptus, lavender, lemon, peppermint, rosemary, and tea tree.
Where there are insects, consider adding citronella oil to the water used to mop floors. Of course, the oil can be diffused using a nebulizer or candle.