There is an organic insecticide available that contains Spinosad It contains a bacterium that targets most leaf eating insects, while sparing the beneficial insects such as lady bugs and praying mantis's. It has been particularly helpful to help me rid my plants of spider mites. It also kills caterpillars and is safe to use right up until 1 day before harvest. (for vegetables) I use Monterey Garden Insect Spray. It is OMRI rated and is only 16 bucks a quart. \t\t \t\t\t\t__