Monterey Horticultural Oil is a natural insectcide for control of aphids, whiteflies, mites, mealy bugs, and other garden pests on citrus trees, vine crops, and vegetables. This horticultural oil is petroleum based, colorless, and non-staining, and has no temperature restrictions unlike other oils that can scorch plants in hot weather. It can be used alone or in conjunction with other insecticide treatments. There is no mixing required, simply hook up a sprayer hose and get to work.