Monterey Garden Insect Spray is a broad spectrum insecticide that contains Spinosad, which is derived through fermentation of a naturally-occurring soil bacterium. Spinosad works on the insects' nervous system, causing paralysis and death in 1-2 days. Since the insects are paralyzed, they may stay on the plants and be mistaken for live insects; always check 2-3 days after spraying to evaluate control in the insect population. For control of foliage feeding worms/caterpillars, thrips, fire ants and many other listed pests. For use on vegetables, fruit & nut trees, citrus, berries, herbs, ornamentals, shrubs, flowers, lawns & trees in home gardens and non-commercial greenhouses. Organic Monterey Garden Insect Spray is safe to use with the following beneficial insects: minute pirate bug, ladybird beetles (ladybugs), green lacewing, and mite predators. However, it is toxic to bees; for this reason, applications should be made in the late evening and on plants that are not blooming, pollen-shedding, or nectar-producing.