Great bug spray. Ideal for thrips, caterpillars etc. Monterey Garden Insect Spray's active ingredient, spinosad, is organic and gives excellent control of pests such as gypsy moth, caterpillars,  thrips, leaf miner, and many more worm and caterpillar-type insects! This  all natural product can be used on vegetables, fruit trees and ornamentals. Easy-to-mix liquid concentrate. Effective against a wide variety of insects. OMRI Listed for Organic Gardening. Protect your garden against pests with the best products from Desert Grown Organics.