Cineole-based eucalyptus oil prevents the separation problem with ethanol and petrol fuel blends. Eucalyptus oil also has a respectable octane rating and can be used as a fuel in its own right. However, production costs are currently too high for the oil to be economically viable as a fuel. This oil is commonly known as Peppermint Eucalyptus Oil. It contains 35-50% piperitone and 23-30% phellandrene. It has three chemo types that have different uses: CT cineole, CT piperitone has a minty fragrance and CT phellandrene is used for insecticide. Eucalyptus oil is steam distilled from the leaves and can be used for cleaning and as an industrial solvent, as an antiseptic, for deodorizing, and in very small quantities in food supplements, especially sweets, cough drops, toothpaste and decongestants. It has insect repellent properties, and is an active ingredient in some commercial mosquito repellents.