It does not harm beneficial insects. Good for roses, grapes and just about every plant including fruit trees, berries and vegetables. Mix 1 oz. of Bio-Oil with 1 gallon of water. OMRI Certified for Mildew and Insects Triact 90EC a case 2x2.5 gal. It works in a matter of hours.
Diatomaceous earth is an effective control for practically all insects.
Most importantly, it helps control the most difficult insects like Thrips. Drench your soil with these beneficial nematodes and control Weevil Larvae and Thrips pupae. Can also be used to control Cutworms and Artichoke Plume Moth. Easily mixed with water and applied with a watering can. Safe and amazingly effective.