Monterey Horticultural Oil. Our product is a uniquely formulated paraffinic horticultural oil designed for both dormant & summer usages. It controls insects by suffocation rather than poisoning them. It will kill eggs larvae & adult insects. However you must physically spray the insect in order for it to be effective. It is very effective on aphids whiteflies mites mealy bugs and scales. It can be used on all ornamentals vegetables herbs fruit tree nut & vine crops. About Monterey: Monterey Lawn and Garden Products is a leading manufacturer of plant protection chemicals and fertilizers. We strive to offer home gardeners the same professional-grade technology available to the agricultural industry. Our growing line of products provide economical and effective solutions to yard and garden problems and are properly registered and labeled to be sold to and used by the home gardener.