Ideal for organic gardening and as an alternative to chemical insecticides. Year Round Spray Oil kills insects by smothering with natural oil. Kills Whitefly, Aphids, Spider Mites, Mealybugs, Scale, Mites, and other common bonsai parasites and insects. Spray Oil is ready to use and can be applied directly to the tree. Spray bottle makes application easy and quick. Highly recommended for bonsai trees. Spray in the winter during dormancy to prevent outbreaks in the spring. Year Round Spray Oil can also be applied again in the spring to prevent infestations. Contains 1 Quart. Active Ingredient: Mineral Oil.